Dundas Jafine EZFXZW 4 in. Vent Cap Replacement Gasket Kit, 4", White This quick and easy solution is for those situations where a damaged vent cap requires replacement and removing the old cap is problematic or impossible Kit includes 4" ProVent vent cap and gasket Ideal retro fit solution - installs in just a couple of minutes using only a screwdriver and 4 screws