Photo 1 of Aluminum Medium Dog Door with Two Sliding Lock Panels, Doggie Door for Interior and Exterior Door, Adjustable Tunnel, Pet Door for Small Dogs and Large Cats Up to 40 lbs

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Photo 1 of Aluminum Medium Dog Door with Two Sliding Lock Panels, Doggie Door for Interior and Exterior Door, Adjustable Tunnel, Pet Door for Small Dogs and Large Cats Up to 40 lbsPhoto 2 of Aluminum Medium Dog Door with Two Sliding Lock Panels, Doggie Door for Interior and Exterior Door, Adjustable Tunnel, Pet Door for Small Dogs and Large Cats Up to 40 lbs