GLT 2x4 LED Troffer — 15W/20W/25W/30W/36W/50W Selectable — 3000K/3500K/4000K/5000K — White

The GLT TR24-46L-30K40K50K-D10 is a commercial 2x4 LED Troffer engineered to deliver up to 7,000 lumens at 140 lm/W with field-adjustable 15W/20W/25W/30W/36W/50W power settings and switchable 3000K/3500K/4000K/5000K color temperatures. Operating on 100–277VAC electrical systems with 0–10V continuous dimming down to 10%, this luminaire provides an energy-efficient replacement for legacy 2-lamp, 3-lamp, and 4-lamp F32T8 or 2-lamp F54T5HO fluorescent fixtures. Built with a UL Listed Damp Location rating, it is qualified for commercial utility rebates under DLC Listed standards and features balanced direct-indirect illumination with universal frame brackets, hinge pins, latches, and wire rope safety protection.

Key Features

• Selectable Wattage: 15W / 20W / 25W / 30W / 36W / 50W — field-adjustable via onboard power selector switch
• Wattage Equivalency: Replaces legacy 2-lamp and 3-lamp F32T8 up to 4-lamp F32T8 (112W) or 2-lamp F54T5HO fluorescent troffers
• Maximum Lumen Output: Up to 7,000 lm at 50W (5,040 lm at 36W / 4,200 lm at 30W / 3,500 lm at 25W / 2,800 lm at 20W / 2,100 lm at 15W)
• Peak Efficacy: 140 lm/W for high-efficiency commercial operation
• CRI: >80 color rendering across all settings
• Selectable CCT: 3000K / 3500K / 4000K / 5000K — field-adjustable via onboard selector switch
• Lens & Optics: Direct-indirect center diffuser lens with a 113.9° average beam angle (112.28° flux angle) for balanced illumination with minimal glare
• Dimming: Seamless, flicker-free 0–10V continuous dimming down to 10%
• Voltage: Universal 100–277VAC constant current driver
• Location Rating: UL Listed for damp locations
• Certifications: DLC Listed, UL Listed
• Rated Life: 50,000 hours (L70) LED lumen maintenance
• Warranty: 5-year limited warranty — GLT
• Form Factor & Design: Timeless 2x4 (T7) direct-indirect architectural profile with universal frame brackets, hinge-pin light engine assembly, and locking latches

Performance & Light Output

CRI >80 across all configurations. Rated life 50,000 hours (L70) LED lumen maintenance. Equipped with a multi-wattage selectable driver (field-adjustable lumen output / variable power settings) and field-adjustable CCT (color temperature selectable / tunable white / switchable Kelvin).

Smart & Control Features

The TR24-46L-30K40K50K-D10 includes a 0–10V dimming LED driver (DIM+ and DIM- low-voltage leads) that provides seamless, flicker-free continuous dimming down to 10% alongside onboard slide switches for field-adjustable wattage and color temperature selection.

Electrical

Powered by a commercial 0–10V dimming LED driver operating on 100–277VAC input for seamless, flicker-free dimming down to 10%. Includes pre-wired AC input (L, N, Ground) disconnects and 0–10V dimming leads.

Emergency Battery Backup: Optional emergency battery back-up configuration available per series specifications.

Construction

Housing & Build: Commercial 2x4 (T7) troffer assembly engineered with universal T-bar frame brackets, light engine lens assembly hinge pins, integrated locking latches, and wire rope safety protection cables.

Location & Environmental Rating: UL Listed for indoor damp locations across commercial drop/grid ceilings and existing troffer retrofit installations.

Lens & Optics: Center-basket diffuser delivering balanced direct-indirect illumination with minimal glare and a 113.9° average beam angle (C0/180: 118.4°, C90/270: 112.2°).

Finish: White architectural finish.

Dimensions: 1212mm L × 603mm W × 50mm H (2ft × 4ft nominal).

Installation & Mounting

Standard Mounting: Designed for 2x4 drop/grid T-bar ceilings and existing fluorescent troffer retrofit installations. Universal frame brackets slide between the existing fixture housing and the T-bar, accepting the light engine lens assembly's hinge pins. Includes self-tapping screws for attaching the wire rope safety cable, a ground wire nut, incoming power line disconnects, and integrated frame latches that lock securely into the universal frame brackets.

Certifications & Rebates

• DLC Listed: Qualifies for commercial utility rebate incentives across regional energy programs. To confirm rebate eligibility with your local utility provider, visit designlights.org and search Model Number TR24-46L-30K40K50K-D10.
• UL Listed: Certified for damp locations per UL standards.
• Warranty & Lifespan: Backed by a 5-year limited warranty and rated for 50,000 hours of LED lumen maintenance.

Typical Applications

• Large Open Offices & Meeting Rooms — Six selectable wattage steps from 15W to 50W (2,100–7,000 lm) allow precise lumen tuning across open floor plans and conference rooms.
• Doctor's Offices, Hospitals & Healthcare Facilities — Balanced direct-indirect illumination with minimal glare and flicker-free dimming down to 10% supports clinical environments.
• Classrooms, Schools & Libraries — Full-size 2x4 (1212mm × 603mm × 50mm) drop/grid fit with universal retrofit brackets upgrades existing fluorescent troffers quickly.
• Airports, Train & Bus Stations — Universal 100–277VAC operation, UL Damp Location listing, and 50,000-hour lumen maintenance handle high-traffic transit terminals.
• Supermarkets, Shopping Malls & Warehouses — Up to 7,000 lumens at 140 lm/W efficacy and >80 CRI deliver bright, uniform commercial illumination.

What's Included

• GLT TR24-46L-30K40K50K-D10 2x4 LED Troffer Light Engine Lens Assembly — White
• Universal T-bar frame brackets, wire rope safety cable with self-tapping screws, ground wire nut, and power disconnects
• Installation and operation manual