Colour Family: WHITE Material: PLASTIC Assembled Product Height: 4" Assembled Product Width: 4" Diameter: 4" . A quick and easy solution for hard to replace vent caps Allows installation right over top of the existing one Eliminates the possibility of damage to the siding, brick or stucco through the removal process of the old one Includes one gasket which fits over any 4" existing cap, a second gasket which fits over the back collar of the new cap and a new UV resistant 4" louvered cap The new cap is then secured over top of the old cap frame once the old louvers are removed thereby creating a watertight seal