Lund 182956 Ventvisor Elite Side Window Defectors, 2-Piece Set for 1999-2004 Silverado 2500; 2001-2006 Silverado 2500 HD, 3500; 2007 Classic Models | Fits Standard Cab Let fresh air circulate through partially opened windows while keeping the rain and other elements out; Reduces interior wind noise and window fogging and keeps car interior cooler when parked in the sun Features an in-channel mounting design crafted from proprietary high-performance material No special hardware or drilling required; Car wash safe Blue-Gray finish provides optical clarity and complements Lund Interceptor hood shield Proudly made in the USA and backed by a limited lifetime warranty