Best Long-Throw Projectors with Glass Lens: 2026 Expert Guide

The Epson PowerLite L520W is a long-throw laser projector designed for institutional use, think classrooms, corporate meeting rooms, and digital signage installations where consistent brightness and image clarity matter. Its 5200-lumen output and WXGA 1920x1200 resolution make it well-suited to larger spaces or rooms with ambient light that would wash out a weaker projector.

Standout features include Epson's 3LCD technology, which avoids the color-wheel artifacts seen in DLP projectors and produces smooth, natural imagery for both video playback and text-heavy presentations. The laser light source is a major plus for institutional buyers, cutting down on the bulb replacement cycles and maintenance calls that plague traditional projectors.

Build quality reflects its purpose: at just over 16 pounds, it's built to be ceiling-mounted and left in place rather than carried between rooms, though early reviewers note it's still manageable to set up and transport when needed. Connectivity is solid for its class, with HDMI, USB, and networked Ethernet control giving IT teams flexibility for remote management in multi-room deployments.

The main drawback is cost, this sits firmly in the professional/institutional pricing tier, which may deter smaller businesses or home theater buyers looking for a budget option. Additionally, the review base is currently thin, so long-term durability claims lean on Epson's general reputation rather than a large sample of user feedback.

Overall, the PowerLite L520W is a smart investment for schools, corporate AV setups, and signage applications that need dependable brightness and low-maintenance operation over years of use. Early user feedback is uniformly positive, praising ease of setup and picture quality, reinforcing its position as a dependable workhorse projector rather than a flashy consumer pick.

The NexiGo Aurora Pro MKII is a 4K tri-color laser UST projector bundled with a 120-inch Fresnel ALR screen, aimed at home theater enthusiasts who want a big-screen experience without a traditional long-throw setup. Its 0.21:1 throw ratio means it can sit just inches from the screen and still project up to 150 inches, making it a strong fit for living rooms where space is limited.

Where this projector really shines is in its Scene Adapt Engine and ALPD 5.0 laser engine, which combine to produce a contrast ratio above 30,000:1 and richly accurate colors at 2,400 lumens. Reviewers note the picture holds up impressively well even in rooms with ambient light, a common weak point for projectors in this category. Support for Dolby Vision, Dolby Atmos, and HDR10+ rounds out a home cinema package that performs well for movies, gaming, and 3D content alike.

Build quality on the projector unit itself seems solid, with a tabletop form factor and integrated Wi-Fi and Bluetooth for streaming flexibility. However, multiple reviewers flagged the included Fresnel ALR screen as genuinely difficult to assemble, with one specifically recommending better gloves than the ones provided to avoid hand strain during setup.

The main drawbacks are the setup difficulty and the premium price tag, which will put this bundle out of reach for casual buyers or first-time projector owners looking for something simple to install. Reviews are also limited in number so far, making it harder to fully assess long-term reliability, though early feedback is uniformly positive.

Overall, the Aurora Pro MKII earns strong praise from those who have taken the plunge, with comparisons favorably made against past experiences with other projector brands. For buyers serious about picture quality and willing to tackle a tricky screen assembly, this laser TV bundle delivers a genuinely cinema-grade experience at home.

The Aurora Pro MKII features a native 4K resolution of 3840 x 2160 paired with a laser light source rated for 2,400 ANSI lumens and a 30,000:1 contrast ratio. Its ALPD 5.0 laser engine covers 107% of the BT.2020 color gamut with ΔE≈1 color accuracy, and the laser source is rated for 30,000 hours of operating life.

Connectivity includes built-in Wi-Fi and Bluetooth 5, along with support for H.264 and H.265 video encoding. The unit measures 21.54" x 21.54" x 16.04" in a tabletop form factor, and its ultra-short 0.21:1 throw ratio allows for projection sizes up to 150 inches from minimal distance.

The bundle includes a 120-inch Fresnel ALR screen designed to reduce glare and reflection, plus a pair of DLP-Link compatible active shutter 3D glasses with a 144Hz refresh rate for smooth, flicker-free 3D viewing.

The Epson PowerLite L530U is a long-throw 3LCD projector engineered for demanding environments like classrooms, corporate boardrooms, and digital signage installations. With 5200 lumens of brightness and WUXGA resolution, it's designed for users who need a large, sharp image that holds up even under ambient lighting.

Where this projector truly shines is image quality. Reviewers consistently highlight its bright, vivid picture, and the 3-chip 3LCD engine ensures colors stay accurate and true-to-life rather than washed out. The inclusion of built-in wireless LAN and Miracast support makes wireless presentations simple, while HDMI, USB, and Ethernet ports cover virtually every connection scenario a business or school might need.

Build quality reflects Epson's commitment to installation-grade hardware. At just over 18 pounds and ceiling-mountable, it's built for permanent setups rather than casual portable use. The menu system, despite the projector's advanced feature set including quick corner correction, is described by users as straightforward and easy to navigate.

The main drawback noted by owners involves throw distance. Because this is a long-throw model with a minimum distance of 4.9 feet, users installing it in tighter spaces may find the image doesn't fit as expected without careful planning. Getting the placement right eliminates the need for keystone correction, but it does require some upfront measurement.

Overall, the PowerLite L530U is a strong choice for organizations needing a bright, reliable, and feature-rich projector for large-scale visual displays. It's not aimed at casual home theater buyers, but for corporate, education, or signage applications, it delivers on brightness, clarity, and connectivity.

The PowerLite L530U features a native WUXGA resolution of 1920 x 1200 with 3LCD, 3-chip technology and an impressive 2,500,000:1 contrast ratio for deep blacks and bright highlights.

Brightness is rated at 5200 ANSI lumens, supporting image sizes from 50 inches up to a massive 500 inches, with a throw distance range of 4.9 to 30.6 feet.

Connectivity includes HDMI, USB, Ethernet (RJ-45), and built-in Wi-Fi, while the light source is rated for 20,000 hours of operation, reducing long-term maintenance needs.

The Epson PowerLite L735U is a professional-grade laser projector designed for institutions that need reliable, high-brightness projection over long periods. It targets corporate offices, schools, and venues requiring digital signage or large-format presentations rather than home entertainment setups.

Its standout feature is the combination of 7000 lumens brightness and WUXGA (1920x1200) resolution, which together produce sharp, vivid images even in rooms with significant ambient light. The 3LCD technology ensures accurate, consistent colors without the rainbow artifacts sometimes seen in single-chip DLP projectors, making it well suited for detailed spreadsheets, video content, and signage graphics.

Build quality reflects its ceiling-mountable, long-throw design intended for permanent installation. Connectivity is robust, with HDMI, USB, Ethernet, and Wi-Fi all included, allowing IT administrators to integrate it into networked AV systems or control it remotely, a valuable feature for corporate and educational environments.

The main drawbacks are practical rather than performance-related: its price positions it firmly in the professional/enterprise segment, and its long-throw format requires careful room planning and typically professional installation. There's also limited independent review data available to gauge long-term durability.

Overall, the PowerLite L735U is a strong choice for organizations needing a dependable, bright, and network-capable projector for permanent installation. It's not designed for casual buyers, but for its intended commercial and educational use cases, it delivers on brightness, resolution, and connectivity.

Brand: Epson

Brightness: 7000 lumens

Resolution: WUXGA (1920 x 1200), 16:10 aspect ratio

Light Source: Laser

Connectivity: HDMI, USB, Ethernet, Wi-Fi

Mounting: Ceiling mountable, long throw lens

Recommended Uses: Corporate, Digital Signage, Education, Entertainment

The BenQ TK710 is a 4K HDR laser projector designed to serve double duty as a premium home theater display and a high-performance gaming projector. Priced at the upper end of the consumer market, it targets enthusiasts who refuse to compromise between cinematic quality and gaming responsiveness. Whether you are setting up a dedicated home cinema or a versatile living room entertainment hub, the TK710 is built to handle both with confidence.

The headline feature is its 3200 ANSI lumen laser light source, which sets it apart from many competitors that struggle in anything but a pitch-dark room. Colors remain vibrant and contrast stays strong even with lights on, backed by 95% Rec.709 color coverage and HDR10 plus HLG support. The Dynamic Function actively adjusts the light source in real time to optimize contrast scene by scene, adding a layer of picture intelligence that benefits both film and gaming content.

For gamers, the TK710 delivers some of the most impressive specs in its class. At 1080p, it achieves a 240Hz refresh rate with just 4ms input lag, making fast-paced competitive titles feel genuinely responsive on a massive screen. At native 4K 60Hz, input lag drops to 16ms, which is well within the acceptable range for console gaming on PS5 and Xbox Series X. The eARC port adds audio flexibility, allowing lossless audio formats to pass through to a connected soundbar or AV receiver without extra cables.

On the installation side, the 1.3x optical zoom and vertical lens shift give users meaningful flexibility in placing the projector without resorting to digital correction that degrades image quality. The 3D keystone adjustment further assists in rooms where perfect alignment is not possible. One limitation worth noting is that the 240Hz high-refresh mode is capped at 1080p rather than 4K, so users expecting native 4K at ultra-high frame rates will need to manage expectations accordingly.

Overall, the BenQ TK710 is a compelling and well-rounded projector for buyers who want the best of both worlds. It earns its price through a durable laser light source, versatile connectivity including eARC, and genuinely impressive gaming performance. If you are serious about upgrading your home entertainment setup and need a projector that handles movie nights and gaming sessions with equal skill, the TK710 deserves serious consideration.

Resolution: True 4K UHD (3840 x 2160) with HDR10 and HLG support for rich, high-dynamic-range visuals across movies, sports, and gaming content.

Brightness and Light Source: 3200 ANSI lumens powered by a long-life laser light source. Laser technology delivers consistent brightness and color accuracy over thousands of hours without bulb replacements.

Gaming Performance: 4ms input lag at 1080p 240Hz for competitive gaming. 16ms input lag at 4K 60Hz for console gaming on PS5, Xbox Series X, and PC. Dedicated HDR Game Modes enhance in-game visuals.

Color Coverage: 95% Rec.709 color gamut coverage ensures accurate, cinema-grade color reproduction for both film and gaming content.

Connectivity: eARC support for high-quality audio passthrough. Compatible with major gaming consoles and streaming devices. Throw distance of approximately 6 feet for a 120-inch image at 10 feet.

Installation Flexibility: 1.3x optical zoom, vertical lens shift, and 3D keystone correction for versatile room placement. Backed by a 3-year manufacturer warranty for added peace of mind.

Who should buy the BenQ TK710? This projector is ideal for home theater enthusiasts who also game regularly and want a single display solution that excels at both. It is particularly well-suited for living rooms where full light control is not always possible, thanks to its 3200 lumen output.

Gaming Considerations: If you primarily play competitive titles at high frame rates, the 240Hz mode at 1080p will feel smooth and responsive on a large screen. Console gamers on PS5 or Xbox Series X will benefit most from the 4K 60Hz mode with 16ms lag, which is imperceptible during normal gameplay. PC gamers with high-refresh monitors will appreciate the flexibility to scale up to a big-screen format.

Home Theater Use: For movie watching, the laser light source and HDR10 support produce excellent contrast and color depth. The 95% Rec.709 coverage means skin tones, landscapes, and cinematic color grading look accurate and natural. Pairing this projector with a quality 4K screen and a good soundbar or AV receiver via eARC will deliver a genuinely cinematic experience.

Installation Tips: The 1.3x zoom and vertical lens shift make the TK710 easier to install than many fixed-lens projectors. At 120 inches, you only need about 6 feet of throw distance, making it suitable for smaller rooms. Plan your cable management around the eARC port if you intend to use an external audio system, as this will simplify your setup considerably.

Budget Note: At this price tier, buyers should also consider whether they need a built-in smart TV platform or are comfortable using an external streaming stick. Confirming smart platform availability before purchase will help avoid any surprises after setup.

The Optoma GT2400HDR is a short throw laser projector aimed at two very specific buyers: home theater fans working with limited space, and golf simulator enthusiasts who need a big, bright image from a short distance. Its 0.496:1 throw ratio lets it fill a large screen while sitting just a few feet away, making it a practical fit for garages, basements, and media rooms where a traditional long-throw projector wouldn't work.

Brightness is the standout spec here. At 4,200 ISO lumens, the GT2400HDR holds up better than most home projectors when there's some ambient light in the room, which matters for golf sims and daytime viewing. Gamers get a real functional benefit too, with an 8.4ms input lag at 1080p120Hz in Enhanced Gaming Mode, a number that competes with dedicated gaming monitors rather than typical projectors.

Build quality centers around Optoma's DuraCore laser light source, rated for 30,000 hours in eco mode. This translates to years of use without swapping lamps, plus instant on/off and consistent brightness over time. The compact desktop form factor, at just under 9.5 pounds, supports flexible tabletop, wall, or ceiling mounting.

The main tradeoff is resolution. While the projector accepts 4K HDR10 and HLG signals, its native panel is Full HD 1080p, so it's not delivering true 4K sharpness. Connectivity is also fairly basic, relying on dual HDMI and RCA rather than modern wireless streaming options, so users will likely pair it with an external streaming device.

Overall, the GT2400HDR earns its place as a specialized tool rather than an all-purpose projector. It's a smart buy for anyone prioritizing brightness, low latency gaming, and short throw flexibility, particularly golf sim builders and space-constrained home theater setups, but 4K purists may want to look elsewhere.

The BenQ MH733 is a 1080p DLP business projector built for conference rooms, classrooms, and presentation spaces that need reliable brightness and easy setup. With 4000 ANSI lumens and a 16,000:1 contrast ratio, it's designed to perform well even when ambient light is present.

In real-world use, reviewers consistently praise its brightness and clarity, noting that it holds up even in rooms with lights on. Wireless casting through the Qcast app and optional dongle lets users present without cable clutter, while auto vertical keystone correction and a 1.3x zoom make alignment quick in almost any room layout.

Build quality benefits from BenQ's low-dispersion glass lens, which reduces chromatic aberration and keeps images sharp over time. The triple adjustment feet, Kensington lock support, and top-mounted lamp access show thoughtful design for both tabletop and ceiling-mounted installations.

On the downside, the built-in 10W speaker is functional but not particularly powerful, so an external sound system is recommended for larger rooms. A few users also noted the color reproduction can look slightly off without calibration, and as a lamp-based projector, it will eventually need bulb replacement, unlike laser alternatives.

Overall, the BenQ MH733 is a dependable, versatile projector that punches above its business-class label. It's a great fit for offices and schools needing bright, wireless-ready presentations, and it doubles surprisingly well as a home theater or gaming display for users seeking value and performance.

The MH733 features a native 1080p (1920x1080) resolution with support up to WUXGA, powered by a 240W lamp rated for up to 15,000 hours in LampSave mode. It offers a 1.15-1.5 throw ratio and image sizes ranging from 30 to 300 inches diagonally.

Connectivity is robust for a business-class unit, including two HDMI ports, VGA in/out, USB Type-A and Mini-B, LAN (RJ45), and RS-232 for network control via Crestron, AMX, or PJ-Link. This makes it suitable for both standalone use and integration into larger AV systems.

Physically compact at 296 x 120 x 221mm and weighing just 2.5kg, it's easy to mount or relocate as needed, backed by BenQ's 3-year warranty for added assurance.

The ViewSonic LS740HD is a Full HD 1080p laser projector designed primarily for professional and semi-professional environments such as classrooms, auditoriums, boardrooms, and large home theaters. With 5,500 ANSI lumens of brightness and a laser phosphor light source, it targets users who need reliable, high-quality projection without the ongoing cost of lamp replacements. It also appeals to home golf simulator enthusiasts thanks to its dedicated Golf Mode.

Performance is where the LS740HD truly shines. The 5,500-lumen output ensures images remain crisp and vivid even in rooms with significant ambient light, a common challenge in educational and corporate settings. The Texas Instruments 0.65-inch DMD chip delivers a high native contrast ratio, adding visual depth and legibility to presentations, videos, and simulations. DLP technology further ensures accurate color reproduction and eliminates the screen-door effect common in older projection systems.

Installation flexibility is a major strength of this projector. The 1.3x optical zoom, combined with horizontal and vertical keystone correction and 4-corner adjustment, makes it straightforward to achieve a perfectly shaped image in almost any room configuration. The 360-degree projection capability and portrait mode open up creative use cases like projection mapping and floor displays, making it a versatile tool for events and staging professionals.

On the downside, the price is firmly in the commercial tier, which may deter budget-conscious buyers. The throw ratio of 1.1 to 1.5 means it is not suited for very short projection distances, and users in compact spaces should measure carefully before purchasing. Wireless content sharing, while supported, requires an additional accessory purchase, which feels like an oversight at this price level.

Overall, the ViewSonic LS740HD is a well-rounded, high-performance laser projector that delivers exceptional value for commercial, educational, and enthusiast applications. Its combination of brightness, maintenance-free operation, installation flexibility, and unique Golf Mode make it one of the more compelling options in its class. For anyone needing a dependable large-venue or simulation projector, it is a highly recommended investment.

Resolution: Full HD 1920x1080p (1080p) native resolution for sharp, detailed imagery across all content types.

Brightness and Contrast: 5,500 ANSI lumens with a high native contrast ratio achieved through a Texas Instruments 0.65-inch DMD chip, ensuring deep blacks and bright whites simultaneously.

Light Source: 3rd-generation laser phosphor technology rated for up to 30,000 hours of use, delivering consistent brightness over its lifespan without lamp replacements.

Throw and Zoom: 1.1 to 1.5 throw ratio with 1.3x optical zoom and 0.8x to 2.0x digital zoom. Projects a 100-inch image from approximately 8.2 feet, with a maximum screen size of 300 inches.

Adjustment and Installation: Features H/V keystone correction, 4-corner adjustment, 360-degree projection, portrait mode, and ceiling mount compatibility. Compatible with ViewSonic mount PJ-WMK-007.

Connectivity and Control: Supports Crestron, AMX, PJ Link, ATEN, and Extron for centralized LAN control. USB firmware update support and optional ViewShare Wireless Screen Casting Kit compatibility.

Durability: IP6X-rated sealed filter-free design for dust resistance. Rated for 24/7 continuous commercial operation.

Who Should Buy the LS740HD? This projector is best suited for IT managers, AV integrators, educators, and serious home theater or golf simulator enthusiasts who need a high-brightness, low-maintenance solution. If you regularly present in large rooms with uncontrolled lighting, the 5,500-lumen output is a significant advantage over consumer-grade projectors.

Room Size and Throw Distance: Before purchasing, measure your available projection distance. The LS740HD requires roughly 8.2 feet to display a 100-inch image and up to about 12.3 feet for a 150-inch image. It is not an ultra-short-throw projector, so very small rooms may not be ideal. For large classrooms, conference rooms, or dedicated home theater spaces, it fits perfectly.

Golf Simulator Compatibility: If your primary use case is a home golf simulator, the LS740HD is one of the few projectors in its class with a dedicated Golf Mode that supports major simulator software platforms. Pair it with a quality impact screen and simulator software for a premium indoor golf experience.

Commercial and 24/7 Use: For businesses or institutions that need a projector running all day, the industrial-grade design and laser light source make the LS740HD a cost-effective long-term investment. The absence of consumable lamps reduces operational costs significantly over time.

Budget Consideration: At its price point, the LS740HD competes with other commercial laser projectors. If you only need occasional home use at moderate brightness, a lower-cost consumer projector may suffice. However, for demanding environments where reliability and brightness are non-negotiable, the LS740HD justifies its cost.

The XGIMI HORIZON 20 Max is a premium 4K triple laser projector aimed at home theater enthusiasts and gamers who want a massive screen experience without sacrificing brightness or color accuracy. It's built for users upgrading from dimmer, bulb-based projectors or looking to replace a traditional TV with something far larger.

The standout feature is the X-Master RGB triple laser engine, which pushes out 5700 ISO lumens and 110% BT.2020 color coverage. Reviewers note that while HDR mode doesn't quite hit the rated brightness in practice, standard 4K mode looks fantastic and bright enough to use with lights on. Gaming performance is another highlight, with 1ms input lag, 240Hz motion, ALLM, and VRR support making it genuinely competitive for console and PC gaming on a huge screen.

Build quality gets consistent praise, with an Elephant Grey, leather-textured finish that looks at home in a living room rather than hidden away. The motorized lens shift and optical zoom simplify setup considerably compared to older projectors that require physical repositioning, and auto keystone and auto focus further streamline installation.

The main drawbacks are software related. A few reviewers found the 3D mode's toggle gets disabled when certain picture enhancements are active, requiring a settings reset to unlock it. Some also mention needing to switch between HDR and standard modes depending on ambient light to get the best picture, since HDR can look dimmer than expected in bright rooms.

Overall, the HORIZON 20 Max is a strong choice for anyone wanting a bright, color accurate, gaming capable projector with a polished smart TV experience built in. It's best suited to home theater builders and gamers willing to invest in a top tier laser projector rather than casual, budget-conscious buyers.

The HORIZON 20 Max features a native 3840 x 2160 (4K) DLP display with 5700 ISO lumens of brightness and a 20,000:1 contrast ratio, supporting Dolby Vision, HDR10+, and IMAX Enhanced formats for accurate, high-quality visuals.

Throw distance ranges from 1.06 to 5.31 meters, producing images from 40 to 300 inches, with 15cm of vertical keystone correction for flexible placement in various rooms.

Connectivity includes HDMI, USB 2.0/3.0, Bluetooth, Wi-Fi, and 3.5mm audio out, alongside built-in Google TV and Google Home for streaming and voice control without extra devices. The unit runs on 220V and draws 280 watts, with a 180-watt laser light source and Harman Kardon speakers for integrated audio.

The ViewSonic PA503HD is a full HD DLP lamp projector designed to serve a wide audience, from corporate presenters and classroom educators to home theater enthusiasts and casual gamers. With 4,000 ANSI lumens of brightness and a 1920x1080 native resolution, it positions itself as a versatile, high-performance option in the mid-range projector market.

The standout feature here is undeniably the brightness. At 4,000 lumens, the PA503HD holds its own in moderately lit rooms, making it practical for daytime presentations without requiring blackout curtains. Paired with a 22,000:1 dynamic contrast ratio and Texas Instruments 0.65-inch DMD chip, colors appear vivid and blacks look genuinely deep, which is impressive for a lamp-based unit at this price point.

For gamers and sports viewers, the 120Hz refresh rate and 16ms input latency are welcome additions that go beyond what most business projectors offer. Motion appears smooth and responsive, and fast-action scenes are rendered with minimal blur. The dual HDMI inputs and USB-A port add practical connectivity, and the auto vertical keystone correction simplifies setup considerably when ceiling mounting or placing on an uneven surface.

On the downside, the 1.1x optical zoom is narrower than competing models, which limits placement flexibility. Being a lamp-based projector, users should also factor in eventual bulb replacement costs and the fact that brightness will diminish gradually over the lamp's lifespan. Laser alternatives may offer longer-term value for heavy daily use.

Overall, the ViewSonic PA503HD delivers a compelling combination of brightness, image quality, and gaming-capable performance that justifies its position in the lineup. It is best suited for users who need a dependable, bright projector for mixed use across work, entertainment, and gaming, and who are comfortable with standard lamp maintenance over time.

Resolution: Full HD 1920x1080 (1080p)
Brightness: 4,000 ANSI Lumens
Contrast Ratio: 22,000:1 Dynamic
Technology: DLP with Texas Instruments 0.65-inch DMD Chip

Throw Ratio: 1.4 to 1.6
Optical Zoom: 1.1x
Digital Zoom: 0.8x to 2.0x
Screen Size Range: 80 inches to 150 inches (standard); up to 300 inches maximum
Throw Distance for 100-inch Image: 10.8 feet

Refresh Rate: 120Hz
Input Latency: 16ms
Connectivity: 2x HDMI, 1x USB-A
Keystone Correction: Auto Vertical Keystone
Firmware Updates: Via USB connection
Mounting: Ceiling mountable, compatible with ViewSonic PJ-WMK-007

If you are considering the ViewSonic PA503HD, the first question to ask is how much ambient light your space typically has. This projector shines brightest, literally, in environments where full blackout is not always possible, such as classrooms, conference rooms, or open living areas. Its 4,000-lumen output gives it a clear advantage over budget 2,000 to 3,000 lumen models in these settings.

For home theater purists who watch exclusively in a dark room, a projector with deeper native contrast or laser light source might be worth considering. However, if your usage spans presentations during the day and movies or gaming at night, the PA503HD handles both scenarios competently without requiring a second device.

Gamers should note that the 120Hz refresh rate and 16ms latency are genuine performance specs, not marketing additions. If you plan to connect a gaming console or PC, this projector delivers a noticeably smoother experience than standard 60Hz business projectors. Just ensure your source device supports 1080p at 120Hz to take full advantage.

Finally, consider placement before purchasing. The 1.1x optical zoom means you have limited room to adjust the image size without physically moving the projector. Measure your intended throw distance against the specification chart to confirm it fits your space before committing to a ceiling mount installation.