636 Broan-NuTone Steel Roof Cap For 3" or 4" Round Duct With Damper & Bird Screen, Black
Part #BN636
MFG #636
Manufacturer Name : Broan-Nutone
- For 3" or 4" round duct
- Built in backdraft damper and bird screen
- Steel baked black enamel finish
- Install Instructions
Specification Sheet - Select the Broan-NuTone 636 Roof Cap to Provide reliable rooftop ventilation. Features a black enamel finish and is designed for use with 3 in. or 4 in. round ducts. Includes a built-in back-draft damper, and Protective bird screen to prevent small pests from entering duct.