Broan-Nutone 3 In./4 In. Exhaust Fan Roof Vent Kit (7-Piece) glazed baking stone Finished opening width 3' 0"

Finished opening width 3' 0"

It locks your door to the jamb to prevent forced entry

Bolt can be padlocked

and Sunrooms

Broan-Nutone 3 In./4 In. Exhaust Fan Roof Vent Kit (7-Piece) glazed baking stone Finished opening width 3' 0"Roof vent kit for complete roof ducting installation of exhaust fans with 3 inch or 4 inch duct connector. Kit includes: Black steel roof cap with built in back draft damper and bird screen, 4 inch diameter metal duct connector, 2 nylon zip ties, 3 inch to 4 inch duct adapter, 8 feet of 4 inch diameter flexible foil ducting (conforms to UL181 Class 1 air connector requirements). Also includes neoprene foam strip which can be used to increase duct