Broan-NuTone Steel Wall Cap for 6" Round Duct with Backdraft Damper and Bird Screen, Black - 843BL

Spring loaded backdraft damper with padded damper zone reduces chatter in windy conditions

Built-in bird screen prevents birds and other small animals from entering duct work

Durable steel with a black powder coat finish

Easy to install in new construction, replacement, or DIY applications

Compatible with 6" round ducting

Not suitable for dryer venting.