Endura Flap Patio Pacific Thermo Panel IIIe with Excellent design that is flexible and safe. It is insulated, durable and has an environmentally friendly flap with adjustable magnet strength makes training simple All weather version for outstanding energy efficiency and maximum wind resistance from moderate to the most extreme climates Heavy gauge aluminum framing suitable for quick and easy installation into your sliding glass door or patio panel. Ideal opening dimensions for all breeds that can be shared between pets of different sizes. Made in USA. Includes a sturdy security locking cover to close off access when not in use