[Dimension]: Size 14 x 14 x 3.25 inch. This rv roof vent cover comes with 2 pack set vent covers, 13 screws, 13 nuts, a mini wiench and a mini screwdriver. [High Quailty]: This trailer roof vent is made with high-quality UV-resistant polypropylene and have an extended lifespan for RV. With a reinforced center support beam and a long continuous hinge for fully adjustment, making the RV roof vent cover has good stable durability. [Wide Applications]: This motorhome roof vent cover is suitable for universal RV, camper, trailer, motorhome roof vent, also applicable for Ventline previous of 2008 and Elixir vents starting from 1994. [Low Profile]: Offering high-flow ventilation, keeping fresh air circulating in your RV. It is supposed to make comfortable experience and enjoyment in your driving. Each cover has been rigorously tested to ensure the safety. If you have any question, please feel free to contact us. Jack Boss 2 Pack Set RV Vent Covers for Roof, 14 Inch Replacement Camper Vent Lid for Trailer and Motorhome, 14" x 14" x 3.25" White