The PetSafe 1-Piece Sliding Glass Pet Door can be installed permanently with the included hardware, or temporarily without any cutting or drilling into your patio panel frame. The included installation guide, how-to videos and our U.S.-based Customer Care team make installing your new pet door quick and easy! If you live in a colder climate or just want extra protection against drafts, we recommend adding a second flap back-to-back with your existing flap for added protection, weight, and insulation. Yes! Perfect for renters, this door can be easily removed if you and your pet move. the spring loaded frame allows the door to be lifted out of your sliding door track easily, and the screws easy to loosen. Pet SizeUp to 15 lbUp to 40 lbUp to 100 lbUp to 130 lbUp to 220 lbMaximum Pet Shoulder Height9"13"19 1/2"23 1/2"27"Flap Opening Size (WxH)5 1/4" x 8 3/16"8 1/4" x 12 3/16"10 1/4" x 16 3/8"10 1/4" x 16 3/8"13 11/16" x 23 3/4"Flap Rise1 3/4"1 3/4"4 1/4"8 1/4"4 1/4"Panel Width8 1/2"11 1/2"13 1/2"13 1/2"16 1/2" About this item *PLEASE CHECK CHART ABOVE FOR SIZING AND FITMENT* 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. ADJUSTABLE SIZING: The patio panel fits your existing sliding door track; adjustable 75 7/8" to 80 11/16" 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: Our 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.