The UV-protected, polyethylene MaxxAir II Roof Vent Cover keeps rain away from your roof vent so you can circulate air in and out of your RV without fear of water damage. The MaxxAir II provides twice the ventilation area of the standard vent cover, plus it can be used with high-powered vents. Features solid one-piece construction with a sleek aerodynamic design. All hardware needed for installation is included. Hinged brackets and manual snap lock pins allow easy opening and closing. SpecsFits: Most standard 14" x 14" ventsDimensions: 22.08"L x 18.15"W x 9.72"H Sleek aerodynamic design provides twice the ventilation area of standard covers Hinged brackets & manual snap lock pins allow easy opening & closing Fits most standard 14"" x 14"" vents | Maxxair II Roof Vent Cover, Black