Description
Works great ,Easy to install and durable for RV,Camper and Home..Our High impact/weather proof materials will provide years of service..Damper automatically opens when range hood fan is on and closes when off..5.3" x 11.5" Exterior Flange ; 3.5" x 10.3" Rough Opening ; Collar length: 1.8" ;.The exhaust vent cover damper is lockable.Include 10 pcs screws.