PetSafe Plastic Pet Door give you and your pet the freedom you deserve! For single dog / moderate use homes, the paintable plastic frame is a huge value. The soft, flexible flap is safe and easy for your pet. Magnetic strips help keep out the weather. Snap-on closing panel allows you to control your pet's access. Large. For pets up to 100 lbs. Flap opening- 10-1/8" x 16-1/4" Includes snap-on closing panel