RV Plumbing Vent Caps - Camper Vent Cap Replacement Kit for 1 to 2 3/8 Inch Pipe - White (2 Pack)

["The RV roof covers are made of high quality plastic material, UV resistant, durable to use.","This RV roof vent cover expels sewer gas to prevent unpleasant odors from entering your RV's cabin through your plumbing. Vent mounts on top of your RV's ventilation pipe.","Easy to install. 6 screw holes in the base for mounting, screw right on, make sure you have silicone caulking to seal all around it. Cap easily snaps onto the vent.","Item dimension: ID 3.8\", 5.3\" diameter base, 3\" tall, perfect fit for 1\" to 2-3/8\" diameter pipe."]