[Packaging Content]Ythese covers are perfect for replacing worn out vents on caravans, campervans. [Prevent Odor]The RV plumbing vent caps ventilates the air, discharges sewer gas, prevents unpleasant odours from entering your caravan cabin through the ducts, and keeps fresh air inside the caravan.Widely used in caravans, campers, trailers, motorhomes or mobile homes. [High Quality Materials]Our sewer vent cover caps are made of high-quality plastic, sturdy and , windproof, rainproof, -, windproof, rainproof, not easy to age, with UV-, can withstand weather conditions for a long time. [Easy to Install]The RV plumbing vent cover is easy to install, start by gluing the base to the roof vent with a sealant, secure the vent cover with screws, and by applying a coat of sealant to the base and you're done.Replace damaged plumbing vents, easy to install, cap detachable For use with 1inch to 2-3/8inch diameter pipe,3inch tall, 5.3inch diameter base Note: Installation guide not included,Please check as much as possible to make sure the item is what you need. Due to different batches, there are slight differences between the actual product and the picture, which not affect normal use Colour:White Material:plastic Package Contents: 2 x RV Plumbing Vent Caps Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.