PetSafe White Aluminum Medium Pet Door for Sliding Doors, Model# PPA11-13127. Designed to insert into existing sliding door tracks without cutting or drilling. Features a durable aluminum frame with a clear flexible flap suitable for medium-sized dogs and cats. Panel dimensions are approximately 11.5 x 77.625 inches, making it compatible with standard sliding door heights. Item is in like new condition and appears to be in original box. Inclusions not fully verified — please inspect at time of purchase.