1.Flexible and easy to use.Perfect match with the car 2.New and nice qulity, to use. 3.Built to quality control standards.Not easy to damage, long service life 4.Stable performance, high reliability.a perfect replacement for your old ones 5. Made of high quality material, for use. Hight Quality: RV plumbing vent cover is made of polyethylene plastic, which is , not weathering, strong oxidation resistance and long service life. Size: The inner diameter of the roof vent cap is 3.8 inch, the base diameter is 5.3 inch, and the overall height is 3inch, Fit for:1inch to 2 3/8inch O.D. pipe. Function: The sewer vent cap can stop unpleasant odors from entering the cabin of your ,. Easy to install: The plumbing vent caps are designed to be detachable and can be easily installed with 6 screw holes in the base. Universali Type: Before buying, please use a ruler to measure the required size, our plumbing cover is suitable for models of RV . Item Type: Plumbing Vent Cap Condition: 100% New Fitment:Direct Replacement Fitment: for , Trailer, color: Black Material: ABS Package Contents: 1 x Plumbing Vent Cap 6 x screw 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.