Insulated Fan Cover, 15-1/2 In O D

Insulated Fan Cover, Depth (In.) 3-1/4, Outside Dia. (In.) 15-1/2, Polyethylene Construction Material, Includes (3) Magnets, Drawstring and Hook and Loop Closure, Stops Unwanted Infiltration Weather, For Use With 10 Inch Shutter Mount and Guard Mount Exhaust Fans 1HLA1, 1HKL3