RAB SWISHAIR2X4 SWISH AIR LED Troffer — 44W/35W/26W Selectable — 3500K/4000K/5000K — White

The RAB SWISHAIR2X4 is a 2×4 recessed LED air-return troffer designed for commercial T-grid ceilings requiring integrated HVAC return-air functionality. Wattage is field-selectable between 44W (factory default), 35W, and 26W, and CCT is field-selectable between 3500K, 4000K (factory default), and 5000K — both via onboard switch, no tools required. At peak output, the fixture delivers 6,048 lumens at 44W / 4000K with a peak efficacy of 150.8 lm/W at 26W / 4000K. The SWISHAIR2X4 operates on 120–277V with a 0–10V dimming driver and is UL Listed for dry and damp locations. It is DLC 5.1 Listed as Ultra-Efficient Premium — catalog number S-1Y204R — qualifying for the highest tier of utility rebates from DLC Member Utilities. Replaces conventional fluorescent 2×4 troffer fixtures.

Key Features

• Selectable Wattage: 44W / 35W / 26W — field-adjustable via built-in onboard switch, factory default 44W. No tools required.
• Wattage Equivalency: Replaces conventional fluorescent 2×4 troffer fixtures.
• Maximum Lumen Output: 6,048 lm at 44W / 4000K.
• Peak Efficacy: 150.8 lm/W at 26W / 4000K.
• CRI: 82–83 across all wattage and CCT configurations.
• Selectable CCT: 3500K / 4000K / 5000K — field-adjustable via built-in onboard switch, factory default 4000K. No tools required.
• Air Return Integration: SWISHAIR vented design allows the fixture to serve as a ceiling-integrated HVAC return-air diffuser — eliminates a separate return-air grille in the same 2×4 grid opening.
• Dimming: 0–10V dimming driver — dims to 10% minimum.
• Voltage & Driver: Class 2 constant current, 120–277V, 50/60Hz.
• Location Rating: UL Listed for dry and damp locations.
• Operating Temperature: −4°F (−20°C) minimum · 104°F (40°C) maximum ambient.
• Certifications: UL Listed (dry and damp) · DLC 5.1 Ultra-Efficient Premium.
• Rated Life: 100,000 hours per IES LM-80 / TM-21.
• Warranty: 5-year RAB warranty — covers light output, color stability, driver performance, and fixture finish.
• Sensor-Ready Controls: Available with factory-installed PIR, MVS, or Lightcloud Blue wireless sensors — ordered by suffix. See Smart & Control Features section.

Performance & Light Output

At 44W: 5,859 lm (3500K / 137.8 lm/W), 6,048 lm (4000K / 147.0 lm/W), 5,883 lm (5000K / 138.7 lm/W). At 35W: 4,783 lm (3500K / 141.1 lm/W), 4,903 lm (4000K / 148.9 lm/W), 4,832 lm (5000K / 143.2 lm/W). At 26W: 3,681 lm (3500K / 144.5 lm/W), 3,758 lm (4000K / 150.8 lm/W), 3,720 lm (5000K / 145.9 lm/W).

CRI 82–83 across all wattage and CCT settings. Rated life 100,000 hours (L70) per IES LM-80 / TM-21.

Smart & Control Features

The SWISHAIR2X4 supports 0–10V dimming as standard and is available with four factory-installed occupancy sensor configurations:

• Standard (0–10V): Dims to 10% minimum via 0–10V DC circuit — compatible with standard commercial building controls.
• PIR (/PIR suffix): Factory-installed Passive Infrared sensor. Detection range: 20 ft diameter at 9 ft mounting height. Max mounting height: 9–12 ft.
• Microwave (/MVS suffix): Factory-installed microwave sensor — detects motion through walls and partitions. Detection range: 20 ft diameter at 9 ft mounting height. Max mounting height: 9–12 ft.
• Lightcloud Blue PIR (/LCBS suffix): Wireless Bluetooth mesh PIR sensor — no 0–10V circuit required.
• Lightcloud Blue MVS (/LCB/MVS suffix): Wireless Bluetooth mesh microwave sensor — no 0–10V circuit required.

Sensor defaults: Motion Sensitivity High · 100% brightness when triggered · 20-min hold time · 20% standby dim · 1-min standby time · Daylight Disabled. Adjustable via Lightcloud Blue app (Lightcloud Blue models) or MSR1 remote accessory (sold separately).

Electrical

Class 2 constant current driver. Input: 120–277V, 50/60Hz. Power Factor: 99.9% at 120V / 96.3% at 277V. THD: 7.6% at 120V / 13.1% at 277V. Surge protection: 2kV L-L / 2kV L-N-G. Dimming: 0–10V, dims to 10% minimum. Mercury-free, UV-free, RoHS compliant.

Construction

Housing & Thermal: Cold Rolled Carbon Steel Sheets and Strip (SPCC) housing construction.

Lens & Optics: Diffused polystyrene lens panel for uniform, glare-controlled illumination across the full 2×4 grid opening.

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

Environmental & Safety: UL Listed for dry and damp locations. Mercury-free, UV-free, RoHS compliant. Operating range: −4°F (−20°C) to 104°F (40°C) maximum ambient.

Dimensions & Weight: Ceiling opening: 47¾" × 23¾". Fixture depth: 1⁷⁄₁₆". Weight: 10 lbs.

Installation & Mounting

Standard Hardware: Mounting hardware included for recessed T-grid ceiling installation.

Mounting Options: Recessed into standard 2×4 T-grid ceiling systems. Recommended ceiling height: 8–12 ft. SWISHAIR vented body serves as the return-air diffuser — coordinate with HVAC layout during installation.

Wiring: Separate 0–10V dimming circuit required (except Lightcloud Blue models). Wattage and CCT selections should be confirmed prior to installation.

Certifications & Rebates

• UL Listed — dry and damp locations
• DLC 5.1 Ultra-Efficient Premium — qualifies for the highest tier of utility rebate programs from DLC Member Utilities. To verify rebate eligibility with your utility provider, visit designlights.org and search catalog number S-1Y204R.
• TAA Compliant — eligible for U.S. government and GSA procurement
• RoHS Compliant — mercury-free, UV-free

Typical Applications

• Open-plan commercial offices — air-return integration consolidates HVAC and lighting into a single 2×4 grid opening while 6,048 lm at 44W delivers broad-area coverage at standard 8–12 ft ceiling heights
• Healthcare facilities and clinical spaces — damp location rating and 82–83 CRI support compliant, high-efficiency illumination in moisture-exposed environments
• Educational institutions — selectable wattage and CCT enable right-sizing per room type without stocking multiple SKUs
• Government and institutional buildings — TAA Compliant and DLC 5.1 Ultra-Efficient Premium qualify for GSA procurement and highest-tier utility rebates
• Corporate interiors with Lightcloud Blue — /LCBS and /LCB/MVS suffix models support wireless daylight harvesting and occupancy control via the Lightcloud Blue app

What's Included

• RAB SWISHAIR2X4 SWISH AIR LED Troffer — White
• Mounting hardware for recessed T-grid installation