Broan RVK1A Broan® Roof Vent Kit, 8-Foot Of 4-Inch Flexible Aluminum Duct.

Broan® Roof Vent Kit, 8-Foot Of 4-Inch Flexible Aluminum Duct. Select The Rvk1A Broan-Nutone® Roof Vent Kit To Provide Reliable Rooftop Venting. 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 Bird Screen To Prevent Small Pests From Entering Duct.. This Kit Comes With All Parts Need For Installation, Including 8 Ft. Of 4 In. Diameter Flexible Foil Ducting, 4 In. Metal Duct Connector, 3-4 In. Duct Adapter, 2 Nylon Zip Ties And 4 Mounting Screws. The Flexible Ducting Conforms To Ul 181 Class 1 Air Connector Requirements.

• Black steel roof cap with built-in back draft damper and bird screen
• 4" diameter metal duct connector
• Two nylon zip ties
• 3" to 4" duct adapter
• 8' of 4" diameter flexible foil ducting conforms to UL 181 Class 1 Air Connector requirements
• Do not use for dryer venting