Best Projector Bulbs Mercury Vapor in 2026

The Industrial Performance H75 is a 75-watt mercury vapor HID bulb designed as a direct replacement for EYE 70015 and H75 fixtures. This product targets industrial facilities, outdoor lighting systems, and high-bay applications where reliable, long-lasting illumination is essential. The bulb features an E26 medium base and operates at 5700K color temperature, making it suitable for environments where bright, daylight-like lighting improves safety and visibility.

The standout feature of this bulb is its impressive 16,000-hour operating life, which significantly reduces replacement frequency and associated maintenance costs. The 5700K color temperature delivers bright, neutral illumination that enhances visibility in industrial settings, warehouses, and outdoor fixtures. The H43 ballast code compatibility ensures seamless integration with existing systems, eliminating installation complications. At 75 watts, the bulb balances adequate brightness with reasonable power consumption for cost-conscious operations.

Built with durable glass construction, this mercury vapor bulb is engineered for demanding industrial environments. The 5.43-inch MOL (Mounting Overall Length) ensures proper fit in compatible fixtures. The bulb's solid mercury vapor technology has proven reliable across countless commercial and industrial applications, delivering consistent performance in challenging conditions where standard incandescent or LED alternatives may not be suitable.

Potential drawbacks include the fact that mercury vapor bulbs require compatible ballast equipment and cannot be used in standard incandescent sockets. The 20 CRI rating indicates lower color rendering accuracy, which is acceptable for industrial use but unsuitable for color-critical applications. Additionally, this product comes with no manufacturer warranty, which may concern some buyers seeking extended protection.

The Industrial Performance H75 is an excellent choice for industrial facilities, outdoor lighting systems, and high-bay applications requiring dependable, long-lasting illumination. Its extended lifespan, bright color temperature, and proven technology make it a solid replacement option for facilities already using mercury vapor systems. If your application requires mercury vapor lighting and you need direct EYE 70015 or H75 compatibility, this bulb delivers reliable performance at a competitive price point.

Electrical Specifications: 75-watt power consumption, 120-volt operation, E26 medium base, H43 ballast code compatibility.

Light Output: 5700K color temperature (daylight-like), 20 CRI (color rendering index), mercury vapor HID technology.

Physical Specifications: 5.43-inch MOL (Mounting Overall Length), E17 bulb shape size, clear glass construction.

Performance: 16,000-hour operating life, suitable for industrial and outdoor high-bay applications.

Compatibility: Direct replacement for EYE 70015 and H75 fixtures, H43 ballast code systems.

Who Should Buy This Bulb: Industrial facilities, outdoor lighting operators, warehouses, and high-bay installations currently using EYE 70015 or H75 mercury vapor systems. This product is ideal for applications where long operating life and bright daylight-like illumination are priorities.

Compatibility Checklist: Verify your fixture uses an E26 base, requires H43 ballast code compatibility, and is designed for mercury vapor bulbs. Standard incandescent sockets will not work with this HID bulb.

Installation Considerations: Ensure your existing ballast system is compatible before installation. Mercury vapor bulbs require specialized ballast equipment. If replacing an older EYE 70015 or H75 bulb, this product provides direct compatibility with minimal installation effort.

Cost-Benefit Analysis: The 16,000-hour lifespan significantly reduces replacement frequency compared to shorter-life alternatives. For facilities running 24/7 or extended hours, the extended lifespan translates to lower total cost of ownership despite higher upfront pricing.

The Sylvania H37KC-250/DX is a professional-grade mercury vapor bulb engineered for outdoor industrial and commercial lighting. This 250-watt HID bulb is specifically designed for large-scale area illumination in applications like parking lots, warehouses, sports facilities, and security lighting where brightness and coverage matter more than color accuracy.

The bulb's standout feature is its powerful 250-watt output combined with a cool white 7000K color temperature, which delivers exceptional visibility and security lighting performance. The high-intensity discharge technology provides efficient energy use compared to traditional incandescent alternatives, making it cost-effective for continuous outdoor operation. The copper construction offers excellent durability against outdoor weather conditions and corrosion.

Build quality is solid with Sylvania's reputation backing the product. The HID technology ensures consistent light output over the bulb's operational life. However, the 25 CRI rating indicates this bulb prioritizes brightness and efficiency over color rendering, making it unsuitable for applications requiring accurate color representation or aesthetic lighting.

One important consideration is that mercury vapor bulbs require proper handling and disposal due to mercury content. This is standard for HID technology but worth noting for facility managers and maintenance staff. The bulb operates on standard North American electrical systems (100-120V, 60Hz), making installation straightforward in most outdoor fixtures.

The Sylvania H37KC-250/DX is an excellent choice for industrial and commercial facilities needing reliable, high-output outdoor lighting. It delivers proven performance in security and area lighting applications where its low CRI is not a limitation. Recommended for professional installers and facility managers seeking dependable HID solutions.

Product Details: Sylvania model H37KC-250/DX mercury vapor bulb, part number 2737131. Single unit package containing one bulb.

Electrical Specifications: 250-watt power consumption, compatible with 100-120 volts AC at 60 Hz frequency. Standard push button control compatibility.

Light Output: Cool white color temperature of 7000 Kelvin, color rendering index of 25. High-intensity discharge light source designed for outdoor use.

Physical Construction: Copper material with coated finish for weather resistance and durability. Engineered for outdoor industrial and commercial applications.

Best For: This bulb is ideal for facility managers, contractors, and commercial property owners needing reliable outdoor area lighting. Perfect for parking lots, warehouse exteriors, sports facilities, security lighting, and industrial outdoor spaces.

Installation Considerations: Ensure your outdoor fixture is compatible with 250-watt HID bulbs and operates on 100-120V, 60Hz power. Professional installation is recommended for safety and proper fixture compatibility. Verify that your existing ballast supports mercury vapor bulbs.

Maintenance: Mercury vapor bulbs require proper disposal at end of life. Handle carefully and follow local hazardous waste disposal regulations. Keep fixtures clean to maintain optimal light output and cooling.

Alternatives: If color accuracy is important, consider LED outdoor area lights or metal halide bulbs with higher CRI ratings. For smaller spaces, lower wattage options are available. Compare total cost of ownership including energy consumption and bulb lifespan.

The Industrial Performance 160E23M/DS-WH is a professional-grade 160W mercury vapor HID lamp engineered for commercial, industrial, and outdoor lighting applications. This lamp is specifically designed for facilities managers, warehouse operators, and contractors who need reliable, high-intensity illumination in demanding environments where standard lighting falls short.

The standout feature is its exceptional 31,000-lumen output combined with a 12,000-hour rated lifespan, delivering both brightness and longevity in a single solution. The flicker-free operation ensures stable, consistent light that enhances visibility and safety in security lighting, parking areas, and large warehouse spaces. The universal burn position provides installation flexibility, allowing this lamp to work across various compatible HID fixture orientations without performance degradation.

Built with weatherproof hard glass and a silver white finish, this lamp demonstrates robust construction quality suitable for harsh conditions. The E26 medium base and 120V operation ensure compatibility with existing commercial lighting infrastructure, eliminating the need for costly fixture upgrades. At 6.75 inches in length, it fits standard HID lamp sockets without modification.

The primary limitation is the lack of manufacturer warranty, which may concern buyers seeking extended protection. Additionally, this mercury vapor technology requires compatible HID fixtures, so it won't work as a direct retrofit in all lighting systems. As LED technology advances, some facilities are transitioning away from mercury vapor, though this lamp remains a cost-effective solution for existing HID installations.

The Industrial Performance 160E23M/DS-WH is a solid choice for commercial and industrial facilities operating compatible HID systems who prioritize brightness, durability, and long service life. It delivers excellent value for warehouse lighting, security applications, and outdoor commercial spaces where high-intensity discharge lamps remain the standard.

Power and Performance: 160 watts, 31,000 lumens maximum output, 3200K color temperature (warm white), flicker-free operation

Physical Design: E23 bulb shape, E26 medium base, 6.75 inches length, weatherproof hard glass with silver white finish

Electrical: 120 volts, universal burn position, compatible with standard commercial HID fixtures

Durability: 12,000-hour rated life, mercury vapor high intensity discharge technology

Package Contents: 1 light bulb, model 160E23M/DS-WH 120V

Best For: Warehouse facilities, outdoor parking areas, security lighting systems, factory floors, and any commercial space using compatible HID fixtures requiring high-intensity illumination.

Installation Considerations: Verify your existing fixtures are compatible HID systems with E26 medium base sockets before purchasing. This lamp is not a retrofit for standard incandescent or LED fixtures. Check your fixture documentation to confirm mercury vapor lamp compatibility.

Maintenance Tips: Handle with care during installation to avoid damaging the hard glass bulb. Allow proper cooling time before replacing. The 12,000-hour lifespan typically translates to 3-5 years of operation depending on daily usage hours.

Alternatives to Consider: If you're transitioning away from mercury vapor, LED high-bay fixtures offer comparable brightness with better energy efficiency and longer lifespan, though they require fixture replacement rather than bulb swaps.

This Industrial Performance 400-watt mercury vapor HID bulb is a direct replacement for the GE 20931 model, designed for industrial and commercial lighting applications where high brightness and long operating life are essential. It's ideal for warehouse lighting, parking lot illumination, street lights, and other large outdoor or indoor spaces requiring powerful, consistent illumination.

The standout feature is the exceptional 34000-lumen output paired with a 20000-hour lifespan, which translates to lower replacement frequency and reduced maintenance costs over time. The 3200K color temperature delivers warm white light that's easier on the eyes than cooler alternatives, while the E39 base ensures seamless integration with existing industrial fixtures without requiring new sockets or adapters.

Built with ED glass construction and rated for vertical/burn-up positioning, this bulb is engineered for demanding environments where reliability matters. The 400-watt power consumption is standard for this class of HID lighting, making it a straightforward swap for existing systems.

The main consideration is that mercury vapor technology requires proper disposal procedures, as these bulbs contain mercury. Additionally, there's no manufacturer warranty, so buyers should verify compatibility with their specific fixtures before purchase to ensure optimal performance.

For facilities needing dependable, high-output lighting replacement, this GE 20931 compatible bulb offers solid value through its long operational life and proven mercury vapor technology. It's a practical choice for industrial users prioritizing brightness and durability over extended warranties.

Core Specifications: 400-watt power consumption, 34000 lumens maximum output, 3200K color temperature, 20000-hour operating life.

Physical Specifications: E39 base, ED glass size, white glass construction, vertical/burn-up burn position capability.

Electrical: 120-volt rated, high intensity discharge (HID) light source type.

Compatibility: Direct replacement for GE 20931, MVR400/SP30/VBU/HO models. Includes one bulb per package.

Who Should Buy This: Industrial facilities, municipalities, commercial property managers, and outdoor lighting contractors needing reliable high-output bulb replacements for existing GE 20931 fixtures.

Installation Considerations: Verify your fixture uses an E39 base and supports 400-watt mercury vapor bulbs before ordering. Mercury vapor bulbs require warm-up time to reach full brightness, unlike LED alternatives. Ensure proper disposal procedures are in place, as mercury vapor bulbs contain mercury and require special handling.

Maintenance Tips: With a 20000-hour lifespan at typical 8-hour daily use, expect approximately 6-7 years of service. Keep fixture lenses clean to maintain maximum light output. Store bulbs in cool, dry conditions before installation to preserve lifespan.

The Mega-Ray 160W Mercury Vapor bulb is a comprehensive UV and heat solution designed for serious reptile keepers. This self-ballasted lamp combines UVA, UVB, and infrared radiation in a single PAR38 bulb, making it particularly valuable for large enclosures and species requiring intense basking environments. It is well-suited for tortoises, bearded dragons, turtles, and other reptiles that benefit from full-spectrum sunlight simulation.

The standout feature of this bulb is its ability to promote vitamin D3 production and calcium absorption through carefully tuned UV peaks. Users report noticeable improvements in reptile appetite, activity levels, and color vibrancy. The infrared heat component provides both warmth and visual light, creating a more natural basking experience that encourages natural thermoregulation and feeding behaviors. The 160-watt output delivers powerful illumination and heat suitable for larger enclosures.

Build quality reflects typical mercury vapor technology, with a robust PAR38 bulb shape that fits standard fixtures. The self-ballasted design eliminates the need for external ballasts, simplifying setup and reducing compatibility concerns. However, mercury vapor bulbs are more fragile than modern alternatives and require careful handling during installation and maintenance.

The primary drawback is that mercury vapor technology consumes more electricity than LED or fluorescent reptile lights, and the bulbs have a finite lifespan requiring periodic replacement. Additionally, proper fixture compatibility and ventilation are essential for safe operation. Some modern LED alternatives now offer comparable UV output with lower power consumption.

Overall, the Mega-Ray 160W Mercury Vapor bulb remains a solid choice for reptile keepers seeking proven, all-in-one UV and heat solutions. Its effectiveness in promoting calcium metabolism and natural behaviors makes it particularly valuable for species with high UV requirements. Best suited for dedicated reptile enthusiasts with appropriate enclosure setups and fixture compatibility.

Brand: Mega-Ray (DBDPet)
Model: Mercury Vapor UV Light Bulb
Wattage: 160 watts
Voltage: 120V
Bulb Type: Mercury Vapor (Self-Ballasted)
Bulb Shape: PAR38
Light Spectrum: UVA, UVB, Infrared
Special Features: Long-lasting, high-intensity output
Suitable Species: Tortoises, bearded dragons, turtles, snakes, iguanas, lizards, frogs, toads, and select birds

Who Should Buy This: Reptile keepers with large enclosures or species requiring high-intensity UV and heat. Best for tortoises, bearded dragons, and other reptiles with significant basking and UV requirements. Ideal for experienced keepers familiar with mercury vapor bulb operation and safety considerations.

Fixture Requirements: Ensure your current fixture is compatible with PAR38 bulbs and rated for 160-watt mercury vapor lamps. Proper ventilation is essential to prevent overheating. Use with appropriate reflectors to maximize UV distribution.

Installation Tips: Install the bulb in a secure, stable fixture at the appropriate distance from your reptile (typically 12-18 inches depending on species). Never touch the bulb with bare hands after operation. Allow adequate cooling time before handling or replacing.

Maintenance: Monitor bulb condition regularly and replace when brightness diminishes. Keep the fixture clean to maximize light output. Store replacement bulbs in a safe location away from temperature extremes.

The Technical Precision H39KB-175 is a professional-grade mercury vapor replacement bulb designed for industrial, commercial, and specialty lighting applications. This 2-pack is engineered specifically for users who need reliable replacements for SYLVANIA H39KB-175 fixtures, making it an essential choice for facility managers, maintenance professionals, and lighting specialists.

The standout feature is the combination of high-efficiency mercury vapor technology with instant-on capability. Unlike traditional bulbs that require warm-up time, these bulbs deliver full brightness immediately upon activation, making them ideal for security lighting, warehouse applications, and outdoor fixtures where instant illumination is critical. The 175-watt power rating provides robust output for large-area coverage.

Built with ED28 bulb shape specifications, these replacements integrate seamlessly into existing fixtures without modification. Technical Precision's manufacturing standards ensure consistent color temperature and light output across both bulbs in the pack, reducing the likelihood of performance variations that plague lower-quality alternatives.

The primary consideration is that mercury vapor technology requires proper handling and disposal according to environmental regulations. Additionally, while the product delivers excellent specifications, limited customer reviews mean potential buyers should verify compatibility with their specific fixture model before purchasing.

Overall, this is a solid choice for professionals seeking dependable, efficient replacement bulbs with proven SYLVANIA compatibility. The 2-pack format adds convenience and value for regular users, though the premium price reflects the specialized nature and quality construction of industrial-grade lighting components.

Product Details

Brand: Technical Precision
Replacement Model: SYLVANIA H39KB-175
Quantity: 2 bulbs per pack
Light Type: Mercury Vapor
Wattage: 175 watts
Bulb Shape: ED28
Special Features: High Efficiency, Instant On

Performance Characteristics

The ED28 bulb shape is a standard industrial form factor designed for compatibility with a wide range of commercial and industrial fixtures. Mercury vapor technology provides efficient light output with excellent color rendering for industrial applications. The instant-on feature eliminates typical warm-up delays associated with some lighting technologies.

Who Should Buy This Product

This product is ideal for facility managers, maintenance technicians, and professionals who operate SYLVANIA H39KB-175 fixtures in industrial, commercial, or outdoor settings. It's particularly valuable for applications requiring immediate illumination, such as security lighting, warehouse operations, parking structures, and outdoor area lighting.

Before You Purchase

Verify that your existing fixture uses the SYLVANIA H39KB-175 specification or compatible ED28 mercury vapor sockets. Check your fixture's voltage and wattage requirements match the 175-watt rating. Confirm your facility has proper disposal procedures for mercury vapor bulbs, as environmental regulations apply. Consider purchasing multiple packs if you operate multiple fixtures to maintain consistent inventory.

Installation and Maintenance

Mercury vapor bulbs reach full brightness within minutes of activation. Allow adequate cool-down time before attempting replacement. Always handle bulbs with care to avoid breakage, and dispose of used bulbs according to local environmental regulations. Store spare bulbs in a cool, dry location away from physical stress.

The OSRAM HBO 103W is a professional mercury short-arc discharge lamp engineered for demanding microscopy and fluorescence applications in medical, scientific, and industrial settings. This is not a consumer product, but rather a specialized optical component trusted by leading microscope manufacturers including Zeiss, Leica, Olympus, and Nikon for critical laboratory work.

The standout feature is its intense point source that produces a broad spectrum spanning visible and ultraviolet wavelengths. Users consistently report that this older mercury technology delivers superior brightness compared to newer non-mercury alternatives, making it the preferred choice for fluorescence microscopy where light intensity directly impacts image quality and diagnostic accuracy. The 100W power consumption generates exceptional luminous output at 2550 lumens, enabling clear visualization of faint fluorescent signals.

Build quality reflects OSRAM's century-long heritage in specialty lighting. The lamp features specially designed arc stability mechanisms that ensure consistent, reliable illumination during extended laboratory sessions. At just 11 grams with a flanged T8 tubular design, it integrates seamlessly into existing microscope systems as a direct OEM replacement without requiring modifications or adapters.

The primary consideration is the 300-hour operational lifetime, which means active laboratories requiring daily use will need replacements roughly every 6-12 months depending on usage patterns. Additionally, proper disposal following environmental regulations for mercury-containing products is necessary. However, the cost savings compared to purchasing through microscope manufacturers or scientific suppliers often justifies these trade-offs.

The OSRAM HBO 103W delivers proven, professional-grade performance for serious laboratory applications. If you operate a microscopy facility, fluorescence imaging system, or surgical lighting setup, this lamp provides the spectral output and reliability you need at significantly better value than OEM channels.

Optical Performance: Mercury vapor discharge lamp producing 2550 lumens with broad spectrum coverage through visible and ultraviolet ranges. Color temperature 2700K with 76 Color Rendering Index.

Electrical Specifications: 100W power consumption at 23V DC operation. Accepts 100-120V AC input at 60Hz frequency. Flanged base design for secure mounting in compatible systems.

Durability: 300-hour average operational lifetime. Specially engineered arc stability for consistent performance. Manufactured by OSRAM, a leader in specialty lighting with over 100 years of industry experience.

Compatibility: Direct OEM replacement for microscope systems from Zeiss, Leica, Olympus, and Nikon. Suitable for microscopy, fluorescence imaging, fiber illumination, surgical lighting, and UV curing applications.

Who Should Buy This: Laboratory directors, microscopy technicians, research scientists, and medical facilities requiring reliable fluorescence microscopy or surgical illumination. This lamp is ideal if you operate equipment from Zeiss, Leica, Olympus, or Nikon and need cost-effective OEM-equivalent replacements.

When to Consider Alternatives: If your facility requires mercury-free solutions due to environmental policies, or if you need lamps with significantly longer lifespans beyond 300 hours, explore newer LED or halogen-based microscopy illumination systems.

Installation Tips: Verify your microscope system uses a flanged T8 socket rated for 23V DC operation before ordering. Handle the lamp carefully as it contains mercury. Ensure proper power supply specifications match your equipment. Dispose of spent lamps according to local environmental regulations.

Cost-Benefit Analysis: Expect to pay 40-60% less than purchasing through OEM channels like Leica or Fisher Scientific. With 300-hour lifetime, calculate your annual replacement frequency based on daily usage hours to determine total cost of ownership versus alternatives.

The Ushio GW/114 is a direct replacement lamp for nuArc platemakers used in screen printing and plate exposure operations. This product targets print shop owners and silkscreen operators who need reliable, cost-effective lamp replacements for their existing nuArc equipment without investing in new machinery.

The standout feature is its exceptional compatibility across 40+ nuArc platemaker models, from the compact VIP-18 series to the industrial-grade N1000 systems. At 1000W with 1500 lumens output, it delivers consistent mercury vapor performance that matches OEM specifications, ensuring your exposure times remain accurate and your plates maintain quality without adjustment.

Build quality reflects Ushio America's industrial heritage. The tubular T-shaped design with G8 base fits precisely into existing equipment, while the mercury vapor technology provides stable, predictable light output. The inclusion of protective gloves and alcohol wipes demonstrates attention to proper installation practices, helping users avoid oil contamination that degrades lamp performance.

The main consideration is that this is an aftermarket solution, not original equipment. While performance is equivalent, some facilities prefer OEM parts for peace of mind. Additionally, mercury vapor lamps require proper recycling at end of life, adding a minor environmental responsibility to the purchase.

For print shops seeking to reduce operational costs while maintaining exposure quality, this Ushio replacement offers excellent value. The broad compatibility eliminates guesswork, and the included accessories encourage professional installation practices that extend lamp life and ensure consistent results.

This lamp works with the following nuArc platemaker series: 261K, 26-1K, 26-1KSP, 321K, 32-1K, 321KSP, 401K, 40-1K, 401KSP, FT18V-1, FT26V1, FT26VNS series, VIP series (18, 26, 26NS models), N750, N1000 series, NCP22, NCP28, NP750, and additional variants.

Before ordering, verify your exact nuArc model number on the equipment nameplate. This lamp is designed for the GW/114 socket specification, which is standard across these models. If you are uncertain about compatibility, contact your equipment manufacturer or a qualified technician to confirm the correct lamp specification for your specific machine.

Always wear the included protective gloves when handling the lamp to prevent skin oils from transferring to the glass surface. Oil contamination can cause hot spots, reduce lamp life, and affect light output consistency. Use the provided alcohol wipe to clean the lamp before installation, ensuring a clean surface for optimal performance.

Allow the lamp to cool for at least 15 minutes before handling after use, as mercury vapor lamps reach extremely high temperatures during operation. Ensure the equipment is powered off and unplugged before removing or installing the lamp. Follow your nuArc equipment manual for specific installation procedures and safety precautions.

The Industrial Performance 400W Mercury Vapor HID Lamp is a direct replacement for GE 46272 fixtures designed for commercial and industrial lighting applications. This lamp is ideal for facility managers, maintenance professionals, and businesses operating warehouses, manufacturing plants, parking structures, and security lighting systems that rely on high-intensity discharge technology.

This lamp delivers exceptional performance with 42,000 lumens of 3700K bright white light and a 70 CRI rating, ensuring powerful illumination and adequate color accuracy for industrial environments. The flicker-free operation provides stable lighting that supports worker safety and productivity. With compatibility for M135/M155 ballast systems and an E39 mogul base, installation is straightforward for technicians familiar with HID fixtures. The ED28 bulb design and 8.25-inch length fit standard industrial lighting housings.

Build quality is solid with durable white glass construction designed to withstand the demands of industrial environments. The lamp operates across a wide voltage range of 100-240V at 50-60Hz, making it suitable for various facility electrical systems. The 400-watt power consumption is typical for mercury vapor technology at this light output level.

The primary drawback is the absence of manufacturer warranty protection, which may concern buyers seeking coverage for defective units. Additionally, mercury vapor lamps are less energy-efficient than modern LED alternatives, though they remain cost-effective for existing HID systems. The lamp requires a compatible ballast system and is not suitable for standard screw-base fixtures.

This is a reliable choice for businesses maintaining existing HID lighting infrastructure who need a proven replacement lamp with strong output and longevity. The 20,000-hour rated life delivers excellent value for high-use commercial and industrial applications.

Electrical Specifications: 400W power consumption, 120V nominal with 100-240V acceptance range, 50-60Hz frequency compatibility, E39 mogul base.

Light Output: 42,000 lumens maximum, 3700K color temperature, 70 CRI (Color Rendering Index), flicker-free operation.

Physical Dimensions: ED28 bulb shape, 8.25 inches in length, 3.5 inches in width, 8 ounces weight, white glass construction.

Performance: 20,000-hour rated operating life, mercury vapor light source, compatible with M135/M155 ballast systems, ANSI and EPACT compliant.

Who Should Buy: Facility managers, commercial property owners, and maintenance teams operating existing HID lighting systems in warehouses, parking areas, manufacturing facilities, and security lighting applications.

Compatibility Check: Before purchasing, verify your fixture uses an E39 mogul base and operates with M135/M155 ballast systems. This lamp is a direct replacement for GE 46272 fixtures specifically.

Installation Consideration: HID lamps require proper ballast systems to operate safely. Do not attempt installation without confirming ballast compatibility. Professional installation is recommended for safety and optimal performance.

Alternative Options: If considering upgrades, LED high-bay fixtures offer superior energy efficiency and longer lifespans, though they require fixture replacement rather than lamp swapping.

The Satco S1937 is a heavy-duty 250W mercury vapor lamp engineered for industrial, commercial, and institutional lighting applications. This product targets facilities managers, maintenance professionals, and lighting contractors who need reliable high-output illumination for warehouses, factories, gymnasiums, and outdoor area lighting.

The standout feature is its impressive 10,000-hour lifespan, which significantly reduces replacement frequency and associated labor costs in demanding environments. The deluxe coated ED28 design improves light quality and color rendering compared to standard mercury vapor lamps, while the 3900K color temperature delivers neutral white light ideal for task-oriented work areas where visibility is critical.

Built with a mogul base and universal operating position capability, this lamp integrates seamlessly into existing industrial fixture infrastructure. The RoHS compliant construction ensures compliance with environmental regulations, making it suitable for facilities with strict sustainability requirements.

The primary limitation is that mercury vapor technology requires a warm-up period to reach full brightness, whereas modern LED alternatives offer instant-on performance. Additionally, the color rendering index of 50 means color accuracy is moderate, which may be a consideration for applications requiring precise color distinction.

For industrial and commercial users prioritizing longevity, powerful output, and cost-effective operation over cutting-edge technology, the Satco S1937 delivers dependable performance. This is a solid choice for facilities seeking to maintain reliable lighting systems with minimal maintenance intervention.

Technical Specifications

Wattage: 250W
Light Type: Mercury Vapor
Bulb Shape: ED28 (Oval)
Base Type: E39 Mogul Base
Color Temperature: 3900K (Neutral White)
Color Rendering Index: 50
Lifespan: 10,000 hours
ANSI Code: H37KC
Operating Position: Universal
Special Features: Deluxe Coated, RoHS Compliant
Weight: 16 ounces
Manufacturer: Satco
Model Number: S1937
UPC: 045923019371

When to Choose This Lamp

The Satco S1937 is ideal if you operate a facility with mogul-base industrial fixtures and need high-wattage illumination for spaces like warehouses, factories, parking structures, or sports facilities. Choose this product if your priority is long operational life and reduced maintenance costs over extended periods.

Installation Considerations

Verify that your existing fixtures have E39 mogul bases before purchasing. This lamp's universal operating position means it can be installed in most orientations, but always follow your fixture manufacturer's guidelines. Allow adequate warm-up time after switching on, as mercury vapor lamps require a few minutes to reach full brightness.

Maintenance and Replacement

With a 10,000-hour lifespan, plan replacement cycles accordingly based on daily usage hours. Keep spare bulbs on hand to minimize facility downtime. Dispose of used mercury vapor lamps according to local hazardous waste regulations.