Gevog 4pcs Side Window Deflectors Original Window Visors for 07-13 Chevy Avalanche Suburban/GMC Yukon XL Silverado Sierra New Body Crew Cab Sun/Rain Guard Vent Visor Item-offered: 4pcs Vent Shade Window Visors (Installation Instruction is Not Included) Material: Reinforced Acrylic Direct Tape-On Design, Easy Peel-N-Stick Installation. No Cutting or Drilling Required Keep Rain out and Let Fresh Air in Allow Window to be Cracked, Reduce Heat Build up in Parked Vehicles