Description: Premium Material: The RV Duct Vent Cover is made of plastic material, which is rainproof and dustproof, reliable in quality and sturdy in use.Easy to Install: The RV Plumbing Vent Cap is easy to install and suitable for replacing worn or damaged vents of your .The top dust cover can be opened and closed.Wide Application: Universal RV Roof Sewer Vent Cover is suitable for all kinds of trailers, yachts, cars, boats, RVs, and outdoor equipment.Good Ventilation Effect: The RV Sewer Vent Cap Cover can provide ventilation inside the RV to ensure comfortable air. It is an ideal accessory for your camping.Size: RV Trailer Roof Vent Cover size is 13.3cmx13.3cmx7.4cm/5.24inchx5.24inchx2.91inch. Fits 2 3/8 inch diameter pipe.It also prevents foreign objects from entering ventilation ducts. Specification: Material: Plastic Size Chart: 13.3cmx13.3cmx7.4cm/5.24inchx5.24inchx2.91inch Package Includes: 1x RV Duct Vent Cover Note: Please allow slightly errors 1-2cm differences due to manual measurement.