Simply the best and easiest to use Pet Patio Door. Beautifully designed, high quality patio pet door panel inserts into the frame of your sliding glass door and automatically adjusts to the proper height. Features a heavy-duty aluminum framed pet patio door, sliding door weatherstrip and weather seal, tempered safety glass, energy conserving Ultraseal replaceable transparent flap, multiple ceramic magnets ensure the Dog Doors flap always closes completely and the locking panel lets you restrict your pet's use both inside and out. Plus, our patio panel dog doors feature a reversible lock for left or right sliding doors. Fits sliding glass door frame openings from 76.75" to 81" for regular patio doors and 93" to 96" for tall patio doors. 93"- 96" panels are available in white only. Offered in a variety of sizes and colors.