$20.99 / EA
4", White, Double Sided, Under Eave Vent, Adapts To 4" Or 6" Exhaust Ducts, Has 2 Removable Screens To Prevent Birds & Squirrels From Entering, Includes A Double Sided Under Eave Vent, 2 Removable Screens & 6' To 4" Transition Collar.