This TRIXIE 2-way dog flap will give your pet a free pass to enter or leave the house even when the door is shut! This flexible and durable dog flap is a must-have for adventurous dogs. It has a sturdy metal bar at the lower end to prevent the flap from swinging, while the removable metal rear panel can be used to lock the flap and keep out intruders, wind and bad weather. Consisting of a sleek white frame and a transparent flap, this dog flap will look great on any door. With the included tunnel element, you can also extend the door flap with a maximum depth of 3.2 cm to fit broader walls or doors.