This medium pet door gives cats and small-to-medium dogs their own entryway with an 8 1/4 x 12 1/4 inch flap, sized for everyday traffic without needing you to open the main door. Double overlapping magnetic flaps sit flush against the full metal Q235 steel frame, helping block drafts, rain, and dust while keeping the frame from warping with regular use. It fits doors from 1 1/16 to 2 inches thick, so it works in bedroom doors, garden doors, or walls, and installs with the included hardware in just a few minutes. At 7.2 pounds and 16.6 x 11.9 x 3.0 inches overall, the compact frame is light enough for interior doors yet sturdy enough for exterior use, letting pets move between rooms or in and out of the house on their own schedule.