Photo 1 of Medium Dog Door for Sliding Glass Doors, Adjustable Height 75 7/8" to 81", All-Metal Framed, Perfect for Medium Pets Up to 40 Pounds

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Photo 1 of Medium Dog Door for Sliding Glass Doors, Adjustable Height 75 7/8" to 81", All-Metal Framed, Perfect for Medium Pets Up to 40 PoundsPhoto 2 of Medium Dog Door for Sliding Glass Doors, Adjustable Height 75 7/8" to 81", All-Metal Framed, Perfect for Medium Pets Up to 40 PoundsPhoto 3 of Medium Dog Door for Sliding Glass Doors, Adjustable Height 75 7/8" to 81", All-Metal Framed, Perfect for Medium Pets Up to 40 Pounds