RAB T34FA Ultra-Economy Field-Adjustable LED Flat Panel — 20–50W Selectable — 3500K/4000K/5000K — White

The RAB T34FA Ultra-Economy Field-Adjustable LED Flat Panel series delivers up to 6,027 lumens with field-selectable wattage and CCT via onboard switches — no rewiring, no tools required. Available in 1×4, 2×2, and 2×4 form factors, with and without factory-installed emergency battery backup (/E). All models support 0–10V dimming, dims to 10%. UL Listed for damp locations. IC Rated for direct insulation contact. DLC Premium and DLC Standard listed. CCEA Compliant. Replaces F32T8 fluorescent troffers.

Key Features

• Selectable Wattage: 1×4 and 2×2: 40W / 30W / 20W selectable (factory default 30W). 2×4: 50W / 40W / 30W selectable (factory default 40W). Field-adjustable via onboard selector switch — no tools required.
• Wattage Equivalency: Replaces F32T8 fluorescent troffers — 1-lamp equivalent (1×4); 2-lamp equivalent (2×2, 2×4)
• Maximum Lumen Output: 1×4: 4,089 lm at 40W / 4000K. 2×2: 4,328 lm at 40W / 5000K. 2×4: 6,027 lm at 50W / 4000K
• Peak Efficacy: 1×4: 127.8 lm/W at 20W / 4000K. 2×2: 134.1 lm/W at 20W / 4000K. 2×4: 139.0 lm/W at 30W / 4000K
• CRI: 81–84 across all models, wattages, and CCT configurations
• Selectable CCT: 3500K / 4000K / 5000K — field-adjustable via onboard selector switch; factory default 4000K
• Lens & Optics: Frosted Polystyrene (PS) lens; aluminum frame and iron back housing
• Dimming: 0–10V continuous dimming; dims to 10%; requires separate 0–10V DC dimming circuit
• Voltage: 120–277V, 50/60Hz; Constant Current, Class 2, Class P driver
• Location Rating: UL Listed for damp locations; IC Rated for direct insulation contact
• Operating Temperature: −20°C (−4°F) minimum to 40°C (104°F) maximum ambient
• Certifications: UL Listed (damp), DLC Premium and DLC Standard listed, CCEA Compliant, IESNA LM-79 & LM-80 tested
• Rated Life: 50,000 hours based on IES LM-80 results and TM-21 calculations
• Warranty: 5-year limited — covers light output, driver performance, and paint finish
• Battery Backup (/E): Factory-installed emergency battery backup available on all three sizes — maintains egress illumination per NFPA 101 and IBC requirements; no separate emergency driver or fixture required

Performance & Light Output

1×4 (T34FA-1X4): At 40W: 3,884 lm (3500K), 4,089 lm (4000K), 3,920 lm (5000K). At 30W: 3,083 lm (3500K), 3,223 lm (4000K), 3,104 lm (5000K). At 20W: 2,137 lm (3500K), 2,198 lm (4000K), 2,139 lm (5000K).

2×2 (T34FA-2X2): At 40W: 4,089 lm (3500K), 4,100 lm (4000K), 4,328 lm (5000K). At 30W: 3,259 lm (3500K), 3,411 lm (4000K), 3,271 lm (5000K). At 20W: 2,282 lm (3500K), 2,341 lm (4000K), 2,279 lm (5000K).

2×4 (T34FA-2X4): At 50W: 5,702 lm (3500K), 6,027 lm (4000K), 5,817 lm (5000K). At 40W: 4,768 lm (3500K), 4,989 lm (4000K), 4,914 lm (5000K). At 30W: 3,833 lm (3500K), 3,943 lm (4000K), 3,911 lm (5000K).

CRI 81–84 across all models and configurations. Rated life 50,000 hours (L70) per IES LM-80 / TM-21.

Smart & Control Features

All T34FA models support 0–10V dimming for integration with standard commercial dimming systems and building automation controllers. Optional microwave occupancy sensor (MVS) or passive infrared (PIR) sensor available for field or factory installation.

• Lightcloud Blue (/LCB): Bluetooth Mesh wireless control — ON/OFF, dimming, color tuning, schedules, and SmartShift. No gateway or hub required.
• Lightcloud Enterprise (/LC): Secure cellular and Zigbee mesh network with remote commissioning, demand response, and BACnet integration. Requires a gateway or hub sold separately.

DLC system: N1XMLOEATBA (Interior); NHCZ2BIA17L (Exterior).

Electrical

Constant Current, Class 2, Class P driver. 120–277V, 50/60Hz. Supports 0–10V dimming; dims to 10%. Requires separate 0–10V DC dimming circuit. Mercury and UV free. RoHS-compliant components. See individual product listings for per-model input current tables.

Construction

Housing & Thermal: Aluminum frame and iron back housing. Maximum ambient temperature 40°C (104°F). Cold weather starting rated to −20°C (−4°F).

Lens & Optics: Frosted Polystyrene (PS) lens.

Finish: Formulated for high durability and long-lasting color. Green Technology construction — mercury and UV free, RoHS-compliant.

Environmental & Safety: IC Rated — suitable for direct contact with insulation, no clearance required. UL Listed for damp locations.

Dimensions: 1×4: 47¾″ L × 11 15/16″ W × 1½″ H — 5.6 lbs. 2×2: 23¾″ L × 23¾″ W × 1½″ H — 5.4 lbs. 2×4: 47¾″ L × 23¾″ W × 1½″ H — 10.0 lbs.

Installation & Mounting

Standard Hardware: Recessed into standard T-grid ceiling. All models fit into standard 1×4, 2×2, or 2×4 T-grid openings respectively.

Mounting Options: Surface mount and recessed drywall ceiling kits available separately. Wattage and CCT selector switches are field-adjustable via onboard switches — set before or after installation, no tools required.

Wiring: Driver includes dimming control wiring for 0–10V dimming systems. Requires separate 0–10V DC dimming circuit.

Accessories:

• Surface mount kit — for surface ceiling installations (1×4, 2×2, 2×4 sizes available separately)
• Recessed drywall ceiling kit — for non-T-grid drywall ceiling installations
• Microwave occupancy sensor (MVS) — optional, factory or field-installed

Certifications & Rebates

• UL Listed — damp locations
• DLC Premium & DLC Standard Listed — qualifies for utility rebate programs. To verify rebate eligibility with your utility provider, visit designlights.org and search DLC Family Code BBBFYY.
• CCEA Compliant
• IESNA LM-79 & LM-80 Tested — tested per IESNA standards by an independent laboratory
• IC Rated — suitable for direct insulation contact

Typical Applications

• Offices and open-plan workspaces — selectable wattage and CCT allow a single SKU to serve varied zones across an entire floor without reordering
• Classrooms and educational facilities — 3500K/4000K/5000K CCT selection meets varied project specs from warm reading environments to task-focused labs
• Healthcare facilities and exam rooms — IC Rated and damp-rated construction supports insulated ceiling installations and moisture-prone areas
• Egress corridors and stairwells — /E battery backup versions maintain illumination during power outages per NFPA 101 and IBC egress requirements
• Government and institutional buildings — CCEA Compliant for qualifying procurement programs
• Retrofit of F32T8 fluorescent troffers — all three form factors drop into existing T-grid openings with no structural modification

What’s Included

• RAB T34FA LED Flat Panel fixture in selected size — White
• Factory-installed emergency battery backup module (on /E variants only)
• Mounting hardware for T-grid installation