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PlexiDor Performance Pet Doors for Dogs and Cats – Door Mount Dog Door with Lock and Key – Bronze, Small Sizes

Amazon.com Price: $232.00 (as of 04/11/2023 00:23 PST- Details)

Never buy replacement flaps again. Single panel thermopane panel opens fast and closes tight. Keeps heating and cooling inside your home.
Accommodates dogs up to nine pounds and cats up to 24 pounds. Promotes exercise, good health and weight maintenance for a longer happier life.
Spring loaded four-way lock can be set to IN ONLY, OUT ONLY, IN AND OUT or LOCKED positions. Heavy duty springs are concealed in the hardened aluminum main frame.