Broan-NuTone® Steel Roof Cap for 3" or 4" Round Duct with Backdraft Damper and Bird screen, Black

Broan-NuTone® Steel Roof Cap for 3" or 4" Round Duct with Backdraft Damper and Bird Screen, Black - Roof Ventilation Solutions The Broan-NuTone® 636 Steel Roof Cap is designed for pitched roof installations to provide reliable rooftop ventilation for exhaust fans in applications such as bathrooms, recreation rooms, and home gyms. Compatible with 3" and 4" round ducting, this roof cap features a built-in backdraft damper and bird screen to prevent outside air infiltration and entry of birds or small pests into the ductwork. It is not suitable for dryer venting. This product is ideal for electrical distributors and lighting solutions providers offering wire and cable and switchgear supplier products focused on ventilation accessories. Specifications Material: Steel Color: Black Dimensions: 11 in. (Length) x 9.25 in. (Width) x 4.375 in. (Height) Product Weight: 1.6 lbs Compatible Duct Size: 3" or 4" round duct Country of Origin: Mexico Manufacturer: Broan Manufacturer Part #: 636 Features Built-in backdraft damper to prevent reverse airflow Integrated bird screen to block birds and small pests Electrocoat acrylic finish for corrosion resistance Easy installation on pitched roofs with flange for secure mounting Compatible with duct tape sealing to prevent air and water leaks Maintenance-friendly design with replaceable damper flap and gasket Downloads & Links Spec Sheet Installation Guide