Patio Pacific - Endura Flap Extra Large Wall Mount - Double Flap 12" x 22" pe. New! Extreme Performance 'Endura' flap - The best, most highly engineered pet door flap ever made. Tired of replacing worn out, leaking flaps? You owe it to yourself to investigate the Endura Flap. See the full story. It seals, it insulates and it will last forever! Psst..Want to see an example of a popular leaker after some use? New! 'High Aspect Ratio' design: Much easier to fit your pet. Improves security for medium to large sized pets. Easier to share with a smaller pet. New! Provision to add magnets to increase the already significant wind resistance. Beefy aluminum framing with completely hidden hardware. No more flimsy frames with bolts showing all over. New! 'Green' flap material: Safe for the environment unlike vinyl (PVC) which is not. Self-Framing using heavy gauge aluminum tunnel for all walls to 8" thick (ample for most 2x4 & 2x6 stud walls). Sturdy Locking Cover - Locks pets in or out. Easy to use clip lock is better than the old spring-loaded pin locks. Four sizes - From #6 for cats and small dogs to the #12 for very big dogs. Superior Customer Protection: 90 day return, 10 year warranty, 15 year warranty on the "Endura" flap assembly 100% Designed, Engineered and Manufactured in the USA. Not China, Mexico or Thailand