No-Cut DIY Install: The PetSafe Sliding Glass Pet Door installs easily into your sliding glass door track, perfect for apartments or rentals with no drilling or permanent alterations required Weatherproof & Secure: Features a magnetic flap, shatter-resistant glass, human door lock kit, and pet door closing panel for convenient, energy-efficient, and safe pet access in any season Flap Sizes for Every Breed: Designed with large dogs in mind, this sliding glass dog door boasts a flap opening of 10 1/4" W x 16 3/8" H, accommodating pets up to 130 lb Global Mission, Local Care: With U.S. roots and worldwide reach, PetSafe delivers vet- and trainer-recommended solutions and exceptional customer support to create fields of joy for pets 25 Years of Trust: Since 1998, PetSafe has created safe, innovative, and trusted products that bring joy, enhance pet lives, and support the lifelong bond between pets and their families