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

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

Key Features

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

Typical Applications

• Large commercial office spaces with return-air plenums
• Healthcare facilities and clean rooms
• Educational institutions
• Restrooms and partitioned areas
• Conference rooms

Performance & Light Output

This 2x4 air return troffer delivers high-efficacy illumination at a maximum 40W setting. 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 for improved visual comfort, backed by a robust 100,000-hour LED lifespan.

Electrical & Controls

Powered by an isolated, Class 2 constant current driver, the fixture operates smoothly on 120-277V circuits. This specific model features an integrated Microwave (MVS) occupancy sensor, which detects fine motion through minor physical obstructions like bathroom stalls or office partitions, ensuring lights remain on when the space is actively occupied. It also includes 0-10V dimming leads for secondary light level control.

Construction & Durability

The fixture is constructed from heavy-duty sheet metal, formed into an architectural center-basket profile and finished in a highly durable, high-reflectance 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 against seismic activity and vibration. 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) Integrated Microwave Sensor
• Integral T-Grid Mounting Clips