MaxSeal Dog Door Flaps

MaxSeal® flaps are built for a precise fit by size and by location—interior or exterior. Using an exterior flap on the interior frame (or vice versa) will misalign the magnets. Each frame’s magnet placement is engineered to deliver an optimal seal; changing those magnet positions will reduce performance. All Security Boss products are hand-built to order. Flap replacement is simple and does not require removing the pet-door frames. Loosen the thumbscrews at the top of the flap by hand or with the included Allen wrench from your hardware packet. If the thumbscrews don’t catch immediately, place a flathead screwdriver behind the flap and apply gentle pressure so the thumbscrews engage, then remove and replace the flap.