The PetSafe Large Wall Entry pet door frame is constructed of sturdy aluminum and comes only in white at this time. The tunnel itself is a black solid mold plastic without corner seams. The dual flap design provides for better insulating in environments where there may be warm or cold conditions. The flaps on this door are a translucent-tinted color and are replaceable. The slide in locking panel can be inserted on the interior or the exterior side of the pet door. The locking panel slides in from the top.

(Note: These pet doors require a screw bolt -molly that is inserted next to the cut-out hole through the wall. For this reason the difficulty greatly increases when installing this door in a stucco or adobe exterior wall).