Broan 3 Inch or 4 Inch Round Duct Roof Cap with Backdraft Damper and Bird Screen

The Broan-NuTone® 636 Steel Roof Cap is an easy-to-install vent for exhaust fans (bathroom, rec room, home gym, etc.). This cap provides reliable roof top ventilation and features both a back draft damper and bird screen, preventing outside air from entering the home and birds or small pests from entering duct work.

Compatible with 3" and 4" ducting. Not suitable for dryer venting.

Features:

• Built-in backdraft damper prevents outside air from entering home
• Built-in bird screen prevents birds and other small animals from entering duct work
• Constructed of durable steel for premium durability
• Easy to install in new construction, replacement, or DIY applications
• Engineered to work with Broan NuTone 4" twist on duct connector, model DC4
• Compatible with 3" and 4" round ducting

Specifications:

• Depth: 11"
• Height: 4-3/8"
• Depth: 11"
• Duct Size: 3" Round, 4" Round
• Material: Steel