RAB T34FA-2X4 Field-Adjustable 2x4 LED Panel — 50/45/40/35/30W Selectable — 3000/3500/4000/5000/6500K — 120-277V — White

The RAB T34FA-2X4 is a commercial 2x4 LED Flat Panel engineered to deliver up to 6,267 lumens with field-adjustable 50W / 45W / 40W / 35W / 30W power settings and switchable 3000K / 3500K / 4000K / 5000K / 6500K color temperatures. Operating on 120-277V electrical systems with 0-10V continuous dimming down to 5%, this luminaire provides an energy-efficient replacement for legacy (3) F32T8 or (3) F28T5 fluorescent fixtures. Built with a UL Listed damp location rating, it features an IC-Rated design engineered for direct contact with ceiling insulation and is TAA Compliant for government and municipal projects.

Key Features

• Selectable Wattage: 50W / 45W / 40W / 35W / 30W — easily field-adjustable to tailor energy consumption
• Wattage Equivalency: Replaces legacy (3) F32T8 or (3) F28T5 fluorescent fixtures for significant energy savings
• Maximum Lumen Output: Delivers between 4,006 and 6,267 lumens depending on selected settings
• Peak Efficacy: Operates at 124 to 139.3 lm/W for high-efficiency commercial performance
• CCT & CRI: 3000K / 3500K / 4000K / 5000K / 6500K — field-adjustable with 83–85 CRI for accurate color rendering
• Lens & Optics: Frosted polystyrene lens ensures uniform, glare-free light distribution
• Electrical: Universal 120-277V AC input featuring 0-10V continuous dimming down to 5% with dim-to-off capability
• Location Rating: UL Listed for damp locations and fully IC-Rated for direct contact with insulation
• Operating Temperature: Engineered to perform in ambient temperatures from -22°F (-30°C) to 104°F (40°C)
• Certifications: TAA Compliant (Trade Agreements Act), CCEA Compliant (Chicago Plenum), and RoHS
• Rated Life: Extended 100,000-hour lifespan (L70) minimizes long-term maintenance
• Warranty: Backed by a 5-year limited warranty from RAB Lighting
• Form Factor & Design: Standard 2x4 architectural profile designed for recessed installation into T-grid ceilings
• Sensor Compatibility: Compatible with optional microwave occupancy sensors (/MVS) for automated energy harvesting

Performance & Light Output

The T34FA-2X4 delivers highly tunable illumination, offering a lumen range of 4,006 to 6,267 lm depending on the selected wattage and CCT configuration. It operates at a peak efficacy of up to 139.3 lm/W.

CRI 83-85 across all standard configurations. Rated life 100,000 hours (L70) per IES LM-80 results and TM-21 calculations. Delivers high-efficiency illumination resulting in significant energy reduction compared to traditional (3) F32T8 fluorescent systems.

Form Factor & Design Profile

The RAB T34FA-2X4 is engineered specifically for standard architectural 2x4 T-grid ceilings. Its IC-Rated construction allows for safe, direct contact with building insulation, making it an ideal solution for low-clearance plenums and strict building code compliance. Furthermore, its CCEA Compliance makes it approved for use in environmental air spaces (Chicago Plenum).

Smart & Control Features

The T34FA-2X4 features standard 0–10V continuous dimming down to 5% and includes dim-to-off functionality. This makes it highly compatible with commercial wall dimmers and centralized building automation systems (BAS).

• Occupancy Sensors (/MVS): Accepts optional factory-installed microwave occupancy sensors for localized energy harvesting. (Sold separately, order with /MVS suffix).

Electrical

Powered by a constant current driver operating on universal 120-277V AC input at 50/60Hz. Integrated surge protection (1 kV line-to-line, 2 kV line-to-ground) protects internal electronics against transient voltage spikes. The driver includes pre-wired 0–10V dimming control leads.

Emergency Battery Backup: A factory-installed emergency battery backup driver is available to provide standby illumination during a primary power failure (must specify the /E option when ordering).

Operating current and amp draw across input voltages for branch circuit and breaker loading calculations:

Construction

Housing & Thermal: Constructed with an aluminum frame and a galvanized steel back housing.

Lens & Optics: Equipped with a frosted polystyrene lens offering wide 120-degree light distribution.

Finish: White finish formulated for high durability and long-lasting color.

Dimensions & Weight: Standard 2x4 footprint. Fixture weight: 10.0 lbs.

Installation & Mounting

Standard Mounting: Designed to be recessed into standard 2x4 T-grid ceilings.

Certifications & Rebates

• UL Listed: Certified as suitable for damp locations
• IC-Rated: Approved for direct contact with building insulation
• TAA Compliant: Product of Cambodia, qualifying as a "designated country" end product compliant with the Trade Agreements Act
• CCEA Compliant: Meets luminaire requirements for use in environmental air spaces per the City of Chicago electrical code
• RoHS Compliant: Manufactured free of mercury and UV emissions with RoHS-compliant components

Typical Applications

• Government & Municipal — TAA compliance allows this fixture to be specified for federal procurement projects and military facilities.
• Commercial Office Spaces — Recessed 2x4 T-grid form factor integrates seamlessly into acoustic drop ceilings.
• Education & Healthcare — Frosted polystyrene lens delivers uniform 120-degree light distribution to maximize visual comfort.
• Retail Environments — Broad 5-step CCT tuning (3000K to 6500K) allows precise adjustment to match merchandising displays and store aesthetics.
• Low-Clearance Plenums — IC-Rated construction permits safe installation directly against ceiling insulation to meet building codes.

What's Included

• RAB T34FA-2X4 Field-Adjustable LED Panel — White
• Installation and operation instructions