4 inch HVAC Duct Manual Volume Backdraft Damper with Adjustment Handle Viton 1/4 inch 12vdc Lead Length: 10mm & 12mm

Lead Length: 10mm & 12mm (3/8" & 1/2")

Choice of Engine: YUCHAI

Dimensions: H: 2-½” L: 3” W: 1-1/4”

External Size: 153mm x 105mm x 55mm (6" x 4

Two (2) Auxiliary Contacts: Normally Open and Normally Closed

4 inch HVAC Duct Manual Volume Backdraft Damper with Adjustment Handle Viton 1/4 inch 12vdc Lead Length: 10mm & 12mm4 HVAC Duct Manual Volume Backdraft Damper with Adjustment Handle Designed for demanding applications where durability and smooth operation are paramount, Ace Crew's Heavy Duty Manual Vent Dampers provides exceptional performance in even the toughest environments. Durable Material: The body is made from 22 gauge galvanized steel material and the flap blade is made from silicone which provides a tight seal. Constructed with sturdy components to ensure