Endura Flap Pet Doors for Walls are manufactured in the USA  to be flexible， safe， and energy efficient in all climates. The translucent， dual-pane flap seals tightly against the weather using a patented system of magnets. This is a good choice for cats and timid dogs since it only has one flap on the inside frame and remains  energy efficient. When closed， the flap reduces air conditioning and heat loss and withstands winds up to 50 mph. Each unit permanently installs into your wall， up to eight (8) inches thick and includes a locking security panel. Comes with: Interior frame with flap and exterior frame， aluminum wall tunnel， security panel， mounting hardware and installation instructions.  The are available in three colors:  White， Black and Tan.  15 year warranty!

Product Features:

• Engineered to be the best pet door for walls on the market
• Single flap  options with flap on inside frame for timid pets energy efficiency
• Flap has magntes on all  three sides keeping it closed in gusts up to 50mph
• Aluminum tunnel adjusts to fits walls up to 8" thick
• Most reliable pet door on the market， backed by a 15 year warranty