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PlexiDor Performance Pet Doors for Dogs and Cats – Wall Mount Dog Door with Lock and Key – Silver, Large Size

Amazon.com Price: $858.00 (as of 04/08/2023 23:26 PST- Details)

Never buy replacement flaps again. Saloon style thermopane panels open fast and close tight. Keeps heating and cooling inside your home.
Accommodates dogs up to 100 pounds. Promotes exercise, good health and weight maintenance for a longer happier life. Able to withstand abuse from even the most powerful dogs.
Installs into stud, brick block or cement walls up to 12 inches thick. Heavy duty springs are concealed in the hardened aluminum main frame. Tunnel will not rust, has no sharp edges and is easy to clean. Comes with lock, key and steel security plate.