PetSafe 1-Piece Sliding Glass Pet Door for Dogs & Cats- Adjustable Height 75 7/8' to 80 11/16'-Medium, White, No-Cut DIY Install Aluminum Patio Panel Insert,Great for Renters or Seasonal Installation PERFECT FOR APARTMENTS AND RENTAL HOMES: This rental-friendly door installs easily in 1 piece so you can easily take it with you if you and your best friend move 2 ADJUSTABLE SIZES: The patio panel is available in 2 adjustable heights to fit in your existing sliding door track; adjustable up to 80 11/16 in or 96 in DESIGNED FOR MEDIUM PETS: Flap opening is 8 1/4 W x 13 3/16 in H for pets up to 40 lb. Easily installs without cutting into a door or wall SECURITY LOCK: The latch kit allows you to lock your sliding glass door once the pet door is in place CONTROLLED ACCESS: Use the closing panel to limit your cat or dog’s access when needed ENERGY EFFICIENT: This door is made with weather resistant aluminum, shatter resistant tempered glass and a magnetic closure on the pet flap U.S.-BASED CUSTOMER CARE: pet product experts are here to help you and your pet and are available by phone, email or chat if you have any questions QUALITY PROMISE: PetSafe brand has been a trusted global leader in pet behavior, containment and lifestyle innovations since 1998 to help keep your pet healthy, safe and happy