Auto Ventshade 194515 In-Channel Ventvisor Side Window Deflector, 4-Piece Set for 2007-2014 Chevrolet, GMC Avalanche, Silverado 1500, Silverado 2500, Silverado 3500, Suburban 1500, Suburban 2500, Sierra 1500, Sierra 2500, Sierra 3500, Yukon Xl Installs in window channel for a sleek, streamlined appearance; Tinted, reinforced acrylic is UV and scratch-resistant and is car wash safe Allows fresh air to naturally circulate through open windows while keeping the rain out Reduces heat build up in parked vehicles by allowing window to be kept partially open Installs in minutes, no drilling or special hardware required; Please note special instructions for In-Channel Ventvisors on installation guide Proudly made in the USA and backed by a Limited Lifetime Warranty