Aprilaire offers all the rectangular sizes you need for residential and light commercial applications. Residential sizes feature the exclusive flexible link design while the larger, light commercial sizes (shaded blue in the table) utilize actuators matched to the needed torque requirements from a well respected commercial actuator supplier.

Aprilaire® Zone Damper, Aluminum Frame/Blade, Galvanized, Side Mounting, Power Closed, Spring Open, Synchronous Motor, Motor Specifications: 24 VAC at 60 Hz, 6 W, 10 VA, Rectangular Shape, 1 in-WC

• Features the exclusive flexible link design
• Supports bypass or controlled pressure relief
• Constructed of heavy-duty aluminum frame and blades with galvanized faceplate
• Two wire installation
• Impedance protected for continuous stall
• Adjustable stop
• Installs in 4-1/4 in slot in duct