Insulated Fan Cover, 13-1/2 In O D

Insulated Fan Cover, Depth (In.) 2, Outside Dia. (In.) 13-1/2, Polyethylene Construction Material, Includes Magnets, Drawstring and Hook and Loop Closure, Stops Unwanted Infiltration Weather, For Use With 7 and 8 Inch Shutter Mount and Guard Mount Exhaust Fans 1HKL9, 1HKL2