Vinyl patio pet door. Brand is Ideal Pet. It's a standard size sliding glass door insert. It fits right inside your existing sliding glass door panel. The doggy door is size xlarge. It's 15 1/4in wide 75 3/4 in long. It has a panel that slides on the inside part to close it off to keep other animals from coming in at night. We used this a little over 6 months. Still in great condition. PM with any questions. We paid $249 originally for it at Home Depot. Can deliver to Hays.