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Endura Flap Explained

The weakest part of any pet door is the flap, and companies have tried various strategies to get the flaps to seal, with mixed success. This flap marks a revolution in the pet door industry.

Seal improvements: The superior seal of the Endura flap is a product of years of research. The flap uses a bellows design on the sides along with magnets that run the full length of the flap. Flaps constrict in cold weather and expand in hot weather. The bellows system allows the flap to shrink and grow, while the magnets will pull the side of the flap into contact with the frame, thus making a tight seal in the most extreme conditions. Across the bottom of the frame is a magnetic bar which "jumps" up to contact the magnetic strip on the bottom of the pet door.

Dual pane flap: The Endura flap uses a dual pane flap that insulates just like a dual pane glass window. The flap is just a bit thicker than a standard piece of dual pane glass and provides equivalent insulation qualities. The flap also has horizontal barriers that prevent air currents from traveling up and down the flap and these barriers act to reduce the heat transfer through the flap.

High "aspect ratio": The new Endura flap is available in taller sizes than most other pet doors. This means that it is easier to fit multiple dogs, as the flap can be lower to the ground and yet still be tall enough for a larger dog at the same time. This high aspect ratio has the side benefit that this new panel takes up less room in your sliding glass door.

Wind resistance: More magnets gives a higher wind resistance threshold. The new Endura flap was designed with this in mind, and has magnets running the full length of both sides of the flap. The bottom of the pet door has the ability to accept additional magnets if needed.

UV resistance/flap clarity: Many pet door flaps are designed with a tint to them, which makes it harder to train pets. The Endura flap is clear, and is treated with a strong UV retardant to prevent yellowing with age.

Hinged top: The Endura uses a stainless steel rod with bushings to hang the flap, and when the pet uses the door the flap rotates on its bushings at the top. A typical pet door flap is soft vinyl and the flap simply flexes open along the top. The new Endura flap eliminates the cracking and tearing at the top of the flap that is typical with most other pet doors on the market. This hinge setup has proven extremely durable. The flap has survived a torture test in which a machine pushed the flap open in on direction then the other a total of 3,000,000 times! There was wear especially where the machine pushed on the flap, but the hinge held up great and the flap still sealed.

Environmentally friendly flap materials: The Endura flap is made from polyolefin based polymers similar to what is commonly used for food storage containers. Most other pet door flaps are made from PVC (vinyl) which is not biodegradable and dangerous during manufacturing.

Copyrighted images courtesy of Patio Pacific, Inc.