The All Weather Medium Pet Door has a flap size of 7.25 inches wide and 13 inches tall. For a wall installation we recommend a wall kit to make the tunnel thru the wall. (item # AWMWK). The cut out size is 8.25 inches wide and 14.875 tall. The maximum wall thickness for the tunnel kit is 7.25 inches. You may use this door on a thicker wall, but would need to finish the interior so that the pet does not step down into the space inside the wall.
answered 1 year, 5 months ago
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