VIOJI 4pcs Dark Smoke Outside Mount Style Sun Rain Guard Vent Shade Window Visors for 02-06 GMC Envoy XL/XUV / 03-06 Isuzu Ascender 7-Passenger Model Only Fitment: 02-06 Chevy Trailblazer EXT Only ; 02-06 GMC Envoy XL/XUV Only ; 03-06 Isuzu Ascender 7-Passenger Model Only Item-offered: 4pcs vent shade window visors (Installation instruction is not included) Style: Outside Mount Style (Stick on to the door & above the windows.Not In-Channel Style.Please check the sample installation picture in the listing for reference) Position: 2pcs for front doors and 2pcs for rear doors Installation: Reinforced Acryli Direct Tape-On Design,Easy Peel-N-Stick Installation.No Cutting or Drilling Required