Duraflex Heavy Duty Dog Door - Patio Mount

NEW! DURAFLEX™ PATIO PET DOORS The Ultimate Premium, Built-to-Last Patio Panel RARE EARTH MAGNETIC FLAP SEALING SYSTEM: Duraflex patio pet doors feature an innovative, new sealing system that stays air-tight and free of drafts even in winds of up to 50 mph. Yet, the flap may still be opened easily by any dog or cat. These ingenious, new pet doors use our proprietary rare earth, point magnet sealing system. Strong, rare earth, disk magnets are spaced along the entire periphery of the flap behind a soft neoprene ribbon seal. Mating magnets are placed in floating seals within the door frame to perfectly mate with the flap locking out the slightest whisp of air. Additionally, the mating magnets are mounted behind industrial quality felt providing a rubber to felt seal for a smooth and quiet closure. The 100% draft free seal has been proven to withstand winds up to 50 mph. How can the flap be so securely sealed yet so easy for a pet to open? Other pet doors use just a few magnets to ke