"PetSafe Deluxe Satin Patio Panel Pet Door, Medium (Doors: Adjustable From 76.75""-81"" Height; For Pets up to 40 lbs.)"

"PetSafe Deluxe Satin Patio Panel Pet Doors - Pet Patio Door and Patio Dog Door from petco.comSimply the best and easiest to use pet patio door. Beautifully designed, high quality patio dog door panel inserts into the frame of your sliding glass door and automatically adjusts to the proper height. Pet Patio Door features a heavy-duty aluminum frame, sliding door weatherstrip and weather seal, tempered safety glass, energy conserving Ultraseal replaceable transparent flap, multiple ceramic magnets ensure the flap always closes completely and the locking panel lets you restrict your pet's use both inside and out. Plus, our patio dog doors feature a reversible lock for right opening or left opening patio doors. Fits sliding glass door frame openings from 77 3/4"" to 82"". Offered in a variety of sizes and colors."