RAB SWISHAIR 2x4 Air Return LED Troffer — 40W Selectable, 120-277V, Microwave Sensor, Battery Backup

The RAB SWISHAIR2X4/MVS/E is a specialized 2x4 air return LED troffer engineered for large commercial spaces requiring efficient HVAC integration, automated lighting, and emergency life safety. Operating at up to 40W on a universal 120-277V input, this expansive fixture features discreet air vents built directly into the frame alongside an integrated emergency battery backup system and a microwave occupancy sensor. It provides highly versatile, field-adjustable illumination for modern offices while ensuring strict compliance with energy and egress codes.

Key Features

• HVAC Integration: Vented air return slots
• Emergency System: Integrated battery backup
• Control: Integrated Microwave (MVS) Occupancy Sensor
• Power Consumption: 40W Max (Field-adjustable)
• Input Voltage: 120-277V
• Color Temperature: Selectable CCT (3500K/4000K/5000K)
• Dimming: 0-10V
• Housing: Die-formed sheet metal
• Lifespan: 100,000 hours (L70)

Typical Applications

• Large commercial office spaces with return-air plenums
• Emergency egress routes and long corridors
• Educational classrooms
• Restrooms and partitioned areas
• Healthcare facilities

Performance & Light Output

This 2x4 air return troffer delivers high-efficacy illumination at a maximum 40W setting. In the event of a power failure, the integrated emergency battery activates, operating the fixture at a reduced lumen output to safely illuminate evacuation paths. It is equipped with field-selectable technology, allowing installers to toggle between 3500K, 4000K, and 5000K color temperatures directly on the unit. The frosted polycarbonate lens ensures even, volumetric light distribution that significantly reduces screen glare.

Electrical & Controls

Powered by an isolated constant current driver, the fixture operates smoothly on 120-277V circuits. This specific model features an integrated Microwave (MVS) occupancy sensor, which emits high-frequency waves to detect motion through minor physical obstructions, ensuring lights remain on when spaces are occupied. The emergency system includes a visible indicator light and test switch, requiring an unswitched hot line for continuous charging.

Construction & Durability

The fixture is constructed from heavy-duty sheet metal, formed into an architectural center-basket profile and finished in a highly durable white powder coat. The unique frame features engineered slots that allow air to pass through the fixture body into the plenum above, reducing the need for separate return grilles in the ceiling grid. It is UL listed for damp locations.

Installation & Mounting

Designed for rapid retrofitting and new construction, the luminaire fits easily into standard 2x4 T-grid suspended ceilings. It features pre-installed integral grid clips that bend firmly over the T-bar to secure the unit. Electrical splices are made easily via the top access plate, and support wire holes are provided for anchoring to the structural ceiling per commercial safety codes.

What's Included

• (1) 2x4 Air Return LED Troffer Fixture
• (1) Emergency Battery Backup Unit
• (1) Integrated Microwave Sensor
• Integral T-Grid Mounting Clips