The GLT UHB-12L-U-50K-D10 is a round UFO LED high bay delivering 13,100 lumens at 90 watts with 145 lm/W efficacy, a 5000K color temperature, and 70 CRI from high-performance LM80 SMD LED chips. 120–277V universal input, 0-10V dimming (10–100%), IP65-rated for damp locations, DLC certified, and cETL/ETL listed for U.S. and Canada. Rated 100,000 hours L70. 5-year limited warranty. Replaces 4-lamp T8 fluorescent or 250W metal halide fixtures.

Key Features

• Output: 13,100 lumens at 90W — 145 lm/W peak efficacy
• Color Temperature: 5000K daylight — single CCT, fixed configuration
• CRI: 70 CRI — suitable for warehouse, factory, and industrial applications
• Dimming: 0-10V continuous dimming, 10–100% range standard on every unit
• Voltage: Universal 120–277V standard; 200–480V special order (suffix -H)
• Location Rating: IP65-rated — suitable for damp locations, humid warehouses, and manufacturing floors
• Mounting: Pendant, hook, or surface mount — three installation options included
• Certifications: cETL, ETL listed for U.S. and Canada; DLC certified for utility rebate eligibility
• Rated Life: 100,000 hours at L70 — minimal maintenance in high-ceiling applications
• Equivalency: Replaces 4-lamp T8 fluorescent or 250W metal halide fixtures
• Operating Temperature: -20°C to 50°C — reliable in cold storage and outdoor-adjacent environments
• Material: Mercury-free, RoHS compliant — environmentally safe for all installation types
• Warranty: 5-year limited warranty covering materials and workmanship

Performance & Light Output

The UHB-12L delivers 13,100 lumens at 90W with a peak 145 lm/W efficacy at the single 5000K color temperature — the highest efficacy point in the UHB series. High-quality glass optics distribute light evenly across the work plane with a glare-free pattern. LM80-tested SMD LED chips confirm 70 CRI and a rated life of 100,000 hours at L70.

Lens & Optics

High-quality glass optics provide glare-free, uniform light distribution across the full fixture aperture. The round form factor and reflector geometry are optimized for wide-area illumination in ceiling heights of 15–25 feet at 90W output. Optional aluminum reflector (CHB-ALR) and prismatic reflector (CHB-PCR) accessories are available to tune beam distribution for specific applications.

Smart & Control Features

The UHB-12L includes 0-10V dimming (10–100%) as standard on every unit. The UL-qualified integrated LED driver supports continuous dimming for compatibility with standard 0-10V wall controls and energy management systems. No additional sensor or wireless control accessories are confirmed on the spec sheet for this model.

Electrical

The integrated, UL-qualified LED driver provides universal 120–277V input (50/60 Hz) as standard. A 200–480V driver is available as a special order (suffix -H). The driver supports 0-10V continuous dimming from 10–100%. The fixture is mercury-free and RoHS compliant.

Construction

Heavy die-cast aluminum housing with a polyester powder-coated finish offers corrosion resistance against extreme climate changes. The round fixture measures 11.75" L × 11.75" W × 5.47" H and weighs 10.5 lbs. IP65-rated for damp location installation. Mercury-free construction with RoHS compliant materials.

Installation & Mounting

The UHB-12L supports three mounting methods: pendant, hook, or surface mount — hardware for all three is included. Recommended ceiling heights: 15–25 feet at 90W. Available accessories (ordered separately):

• CHB-ALR — Aluminum reflector
• CHB-PCR — Prismatic reflector
• CHB-WG — Wire guard
• CHB-SP — Surge protector
• CHB-TL7-15P — Twist-lock plug

Certifications & Rebates

cETL and ETL listed for U.S. and Canada — covering commercial and industrial applications in damp locations. DLC certified — eligible for utility rebate programs nationally (verify current DLC product code at designlights.org). RoHS compliant; mercury-free construction.

Typical Applications

• Warehouses & Distribution Centers: IP65 damp rating handles humidity and dust; 13,100lm output suits 15–25 ft ceiling heights
• Gymnasiums & Sports Facilities: Glare-free glass optics and high lumen output support even illumination over large open floor areas
• Factories & Workshops: 0-10V dimming integrates with energy management systems for zone control; surface mount option suits low-clearance installations
• Automotive Service Bays: 145 lm/W efficacy delivers high output at low wattage for overhead task lighting
• Retail Big-Box Stores: Round UFO form factor and uniform distribution suits high-ceiling retail environments
• Cold Storage & Freezer Facilities: -20°C cold start rating ensures reliable operation in refrigerated warehouses and freezer aisles

What's Included

• 1× GLT UHB-12L-U-50K-D10 UFO LED High Bay (90W)
• Pendant, hook, and surface mount hardware