Swap out a damaged or worn PetSafe pet door flap to keep it functioning like new. PetSafes Replacement Pet Door Flap has a magnetic closure at the bottom to secure the flap closed when not in use. Bottom weather sweep increases thermal efficiency. To replace the flap in your pet door, remove screws from the interior frame of the pet door. Remove the bar and old flap. Fit the new flap in the frame and reposition if necessary. Replace the bar and tighten the screws. Replacement flap fits Freedom Aluminum Pet Door, Plastic Pet Door, Extreme Weather Door (noninsulated), Wall Entry Alumium Pet Door (requires two flaps), Freedom Patio Panel Pet Door, and Larson Storm Door with Freedom Aluminum Pet Door. Screws and flap mounting bar sold separately. Available: S (5.2W x 8.9H), M (8.2W x 12.9H), L (10.2W x 16.9H), XL (13.6W x 24.4H). Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Pet Doors.