GLT Field-Adjustable UFO LED High Bay — 62,000 lm — 140W / 210W / 280W / 350W Selectable — 5000K — 347–480V — Bronze
Available in stock (284)
About this item
About this item
- Ultra-High Output — 62,000 lm at 350W, 190 lm/W Peak: Delivers up to 62,000 lumens at 350W with a peak efficacy of 190 lm/W at 140W — replacing 750W–1000W metal halide fixtures and covering ceiling heights from 20 to 45 ft with a single SKU.
- 347–480V High-Voltage Input — Drop-In for Industrial Panels: Designed for facilities running high-voltage distribution systems — no step-down transformer required, reducing installation cost and complexity on large-scale Canadian and U.S. industrial retrofits.
- 65°C High-Ambient Rated at Reduced Wattage: Operates in ambient temperatures up to 65°C at 40%–80% wattage settings — designed for foundries, hot manufacturing environments, and facilities where standard fixtures fail prematurely.
- 100,000-Hour Rated Life — Double the Industry Standard: IES LM-80 / TM-21 validated 100,000-hour lifespan means fewer re-lamp cycles and lower long-term maintenance costs in large industrial facilities.
- DLC Premium Listed — Utility Rebate Eligible: Qualifies for utility rebate programs through designlights.org, reducing net project cost for large-scale industrial retrofits in most U.S. states and Canadian provinces.
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Description
Description
The GLT HBUL-350W-UV-50K-D10 (347–480V) is an ultra-high-output, heavy-duty UFO LED high bay engineered for the largest industrial and commercial facilities running high-voltage distribution systems. Four selectable wattage steps (140W / 210W / 280W / 350W — 40% / 60% / 80% / 100%) are adjustable on-site via the wattage adjustment dial. Fixed 5000K daylight CCT delivers crisp, high-contrast illumination ideal for industrial and warehouse environments. Delivers up to 62,000 lumens at a peak efficacy of 190 lm/W on a 347–480V high-voltage platform. CRI 70, UL cUL wet location listed, and DLC Premium listed for utility rebate eligibility. Rated life 100,000 hours. 0–10V dimmable driver standard (10% minimum). Backed by a 5-year limited manufacturer warranty.
Key Features
- Field-Selectable Wattage: 140W / 210W / 280W / 350W (40% / 60% / 80% / 100%) via on-site wattage adjustment dial
- Fixed CCT: 5000K Daylight — optimized for industrial visibility and contrast
- Maximum Lumen Output: 62,000 lm at 350W
- Peak Efficacy: 190 lm/W at 140W
- CRI: 70 across all wattage settings
- Dimming: 0–10V dimmable driver standard (100% to 10% minimum)
- High-Voltage Input: 347–480V AC — no step-down transformer required for industrial high-voltage distribution panels
- Location Rating: UL cUL wet location listed
- Max Ambient Temperature: Up to 65°C at 40%/60%/80% settings; 55°C at 100% (350W)
- Cold-Start Rated: -40°C (-40°F)
- Optics: 120° lens for uniform light distribution
- Rated Life: 100,000 hours (IES LM-80 / TM-21)
- Certifications: DLC Premium, UL cUL Listed, TAA Compliant
- Wattage Equivalency: Replaces 750W–1000W metal halide UFO high bay fixtures
- Warranty: 5-year limited manufacturer warranty
Performance & Light Output
Fixed 5000K CCT across all wattage settings. At 350W (100%): 62,000 lm / 177 lm/W | Max ambient: 55°C. At 280W (80%): 51,000 lm / 182 lm/W | Max ambient: 65°C. At 210W (60%): 39,000 lm / 186 lm/W | Max ambient: 65°C. At 140W (40%): 26,600 lm / 190 lm/W | Max ambient: 65°C. Rated life 100,000 hours per IES LM-80 results and TM-21 projections.
Smart & Control Features
The HBUL-350W (347–480V) includes a standard 0–10V dimmable driver and supports plug-and-play sensor accessories via the integrated sensor receptacle:
- Plug-and-Play PIR Sensor: MSANT12VPH01 (standard) | MSANT12VPHB01 (Bluetooth) — sold separately
- Plug-and-Play Microwave Sensor: MSANT12VMH01 (standard) | MSANT12VMHB01 (Bluetooth) — sold separately
Bluetooth sensor variants enable wireless group control and scheduling without a separate gateway for large facility deployments.
Electrical
347–480V AC high-voltage input. 0–10V dimming from 100% to 10% minimum. Integrated surge protection. Operating temperature: -40°C to +55°C at 100% wattage; -40°C to +65°C at 80% and below. The 347–480V driver eliminates the need for step-down transformers in Canadian (347V) and large U.S. industrial (480V) facilities, reducing installation cost and panel complexity. TAA compliant.
Construction
Durable die-cast aluminum housing with heat-dissipating fins for superior thermal management and long-term reliability. Dark bronze polyester powder-coat finish for corrosion resistance in demanding environments. 120° lens for uniform light distribution. Dimensions: Ø24.25" × 7.47"H (Ø616mm × 189.7mm). Weight: 17.32 lbs (7.858 kg).
Installation & Mounting
Two mounting methods supported: hook mount (pre-installed) and 3/4" conduit pendant mount. Recommended ceiling height by wattage setting: 140W — 20–28 ft | 210W — 25–35 ft | 280W — 30–40 ft | 350W — 35–45 ft.
- Mounting Options: Hook (pre-installed), 3/4" conduit pendant mount
- Sensors: MSANT12VPH01 (PIR), MSANT12VMH01 (Microwave), Bluetooth variants — sold separately
Certifications & Rebates
UL cUL listed for wet locations. DLC Premium listed — eligible for utility rebate programs in most U.S. states and Canadian provinces. Verify eligibility at designlights.org. TAA compliant for federally funded projects.
Typical Applications
- High-Ceiling Warehouses & Distribution Centers: 62,000 lm at 350W covers the tallest racking and widest bays; 347–480V input suits facilities with high-voltage distribution panels
- Large Manufacturing & Heavy Industrial Facilities: Wet-location rating and 65°C ambient tolerance handle extreme production floor environments on high-voltage systems
- Aircraft Hangars: Ultra-high output and large 24.25" aperture deliver uniform coverage across the widest spans
- Municipal & Government Facilities: TAA compliant — qualifies for federally funded retrofit and new construction projects
- Commercial Garages & Auto Service: 5000K daylight CCT maximizes color contrast for inspection and detail work
- Stadiums & Arena Facilities: 62,000 lm / 350W handles the highest gymnasium, arena, and indoor sports venue ceilings
What's Included
- GLT HBUL-350W-UV-50K-D10 UFO LED High Bay (347–480V) with integrated LED engine, driver, and wattage adjustment dial
- Pre-installed hook mount
Specifications
Specifications
Dimensions
Documents
Style & Materials
Characteristics & Features
Electrical Information
Item Details
Warranty & Certifications
Shipping & Returns
Shipping: Enjoy free standard shipping on most orders over $99. Exclusions apply for oversized & commercial items. We ship to the contiguous 48 United States.
Returns: We offer a 60-day return window for most items. Products must be in their original, unused condition with all packaging. Exclusions: Special orders, clearance, and custom items.
Frequently Asked Questions
Is the GLT HBUL-350W (347–480V) rated for outdoor or wet locations?
Is the GLT HBUL-350W (347–480V) rated for outdoor or wet locations?
Can I adjust the wattage after installation?
Can I adjust the wattage after installation?
What sensors are compatible, and how do they install?
What sensors are compatible, and how do they install?
Why choose the 347–480V version over the 120–277V model?
Why choose the 347–480V version over the 120–277V model?
Is this fixture DLC listed, and how do I check rebate eligibility?
Is this fixture DLC listed, and how do I check rebate eligibility?
great servive
We recently bought several of these lamps to test out in our collision repair shop. We hung 2 of them next to our old HID lamps and immediately bought 14 more to complete the installation. They are extremely bright, have great coverage and we no longer have shadows in corners and along walls. The energy savings alone makes them worth buying!
These lights work really well in our facility; they are fairly robust and last a long time
The lights were fine. The issue that arose for me was their claim of shipping within three business days and that "all lights are in stock". I placed three different orders. The first one had not shipped within three weeks. After I inquired about it, I was told there was a communication error and the lights would ship immediately. It still took a week. Both the second and third orders took multiple weeks to ship, and both times they only shipped after I inquired about them. It is clear they do not stock these lights and instead are just a middle man.