Feature:The White Roof Vent Cap is widely used in RVs, Camper, Trailer, Motorhomes, or mobile homesThe vent cover fits for 1 to 2 3/8" pipes, the camper vent cap can stop unpleasant odors from entering the cabin of your motorhome, or camper.RV sewer vent cap is made of durable plastic, which is weather-resistant and resists corrosion and has a long service life.Camper Plumbing Vent mounts on top of your RV's ventilation pipe. Cap easily snaps onto the vent.The Roof Vents are designed to be detachable and can be easily removed by pulling. There are 6 screw holes in the base of rv cap for mounting. (screws not included) Specification:Color: WhiteMaterial: PlasticType: RV Roof Vent CoverFit for: 1" to 2 3/8" O.D. pipePlacement on Vehicle: RV RoofSize 1: 7.3x13.3cm / 2.87"x5.24"(H*D)Inner Diameter 1: 96mm / 3.