RAB SWISHFA1X4-D10 Field-Adjustable Center Basket LED Troffer — 39W / 29W / 19W Selectable — White

The RAB SWISHFA1X4-D10 delivers up to 5,668 lumens with field-selectable wattage (39W / 29W / 19W, factory default 29W) and color temperature (3500K / 4000K / 5000K, factory default 4000K) — all on a universal 120-277V input. Dimming is via 0-10V continuous driver, dims to 10%. UL Listed for dry and damp locations. DLC 5.1 Qualified, eligible for utility rebates from DLC Member Utilities.

Key Features

• Selectable Wattage: 39W / 29W / 19W field-adjustable via integrated driver switch; factory default 29W
• Maximum Lumen Output: 5,668 lm at 39W / 4000K
• Peak Efficacy: 166.0 lm/W at 19W / 4000K
• CRI: 83–85
• Selectable CCT: 3500K / 4000K / 5000K field-adjustable via integrated driver switch; factory default 4000K
• Dimming: 0-10V continuous, dims to 10%; requires separate 0-10V DC dimming circuit
• Input Voltage: 120-277V, 50/60Hz — Class 2, Constant Current driver
• Location Rating: UL Listed for dry and damp locations
• Operating Temperature: -20°C to 40°C (-4°F to 104°F)
• Certifications: UL Listed · FCC Compliant · RoHS Compliant · IESNA LM-79 & LM-80 · DLC 5.1 Qualified
• Lens: Frosted Polystyrene
• Rated Life: 100,000 hours (IES LM-80 / -21 calculations)
• Warranty: RAB 5-year limited — light output, driver performance, and paint finish

Performance & Light Output

At 39W: 5,292 lm (3500K / 145.4 lm/W), 5,668 lm (4000K / 161.5 lm/W), 5,442 lm (5000K / 149.5 lm/W). At 29W: 4,300 lm (3500K / 151.9 lm/W), 4,511 lm (4000K / 164.6 lm/W), 4,392 lm (5000K / 155.2 lm/W). At 19W: 2,916 lm (3500K / 156.8 lm/W), 3,022 lm (4000K / 166.0 lm/W), 2,980 lm (5000K / 160.2 lm/W). CRI ranges from 83 to 85 across all wattage and CCT combinations. Rated life 100,000 hours per IES LM-80 and -21 calculations.

Smart & Control Features

The SWISHFA1X4-D10 includes standard 0-10V dimming leads and is compatible with optional factory-configured control upgrades:

• 0-10V Dimming (standard): Dims to 10% via separate 0-10V DC circuit. Compatible with commercial building control and energy management systems.
• Microwave Sensor (/MVS): Optional factory-configured microwave occupancy sensor for automatic on/off and dimming control.
• Lightcloud (/LC): Optional factory-configured Lightcloud wireless control integration for networked lighting management.

Electrical

Class 2, Constant Current driver, 120-277V AC, 50/60Hz. Power Factor 99.2% at 120V, 96.4% at 277V. THD 11.9% at 120V, 7.84% at 277V. Surge protection DM 2kV / CM 4kV. 0-10V dimming leads included, dims to 10%; requires separate 0-10V DC dimming circuit. Mercury-free, UV-free, RoHS compliant.

Construction

Sheet metal housing with white finish, formulated for high durability and long-lasting color. Frosted Polystyrene lens for smooth, uniform light distribution. Metal reflector with high-reflectance white finish, optimized for uniform distribution. Dimensions: 47¾" L × 11 15/16" W × 3" D. Weight: 10.2 lbs.

Installation & Mounting

Recessed into standard T-grid ceiling. Surface and recessed mounting kits for drywall ceilings available separately:

• SMKPANEL1X4 — 1×4 Surface Mounting Kit, White
• RMKPANEL1X4 — 1×4 Recessed Mounting Kit, White

Certifications & Rebates

UL Listed for dry and damp locations. FCC Compliant (Part 15). RoHS Compliant. IESNA LM-79 & LM-80 Tested. DLC 5.1 Qualified — this product is eligible for rebates from DLC Member Utilities. Visit designlights.org and search for SWISHFA1X4 to verify eligibility and rebate amounts in your area. Smart Shift DLC ID: S-73GYQS.

Typical Applications

• Commercial Office Spaces: Slim 1×4 form factor fits standard T-grid ceilings in private offices and open-plan workspaces where narrow bays or column spacing limits fixture size.
• Educational Facilities: Selectable CCT allows administrators to tune color temperature for classrooms, corridors, or libraries without re-ordering fixtures.
• Healthcare Facilities: Damp location rating and high CRI (83–85) support clinical environments requiring clean, accurate illumination.
• Retail Environments: Peak efficacy of 166.0 lm/W at 19W reduces operating costs in low-ceiling retail spaces while maintaining high-quality merchandise lighting.
• Corridors & Common Areas: Field-selectable wattage down to 19W optimizes energy use in lower-demand spaces without stocking additional SKUs.

What's Included

• RAB SWISHFA1X4-D10 1×4 Center Basket LED Troffer
• Pre-installed driver assembly
• Integral T-grid mounting clips