VIOJI 4pcs Dark Smoke in-Channel Style Sun Rain Guard Vent Shade Window Visors Fit 91-01 Ford Explorer 4-Door Model Only Fitment: 91-01 Ford Explorer 4-Door Model Only Item-offered: 4pcs vent shade window visors (Installation instruction is not included) Style: In-Channel Style (Mount on the inside of the window channel ) 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