Closer Pets Wood Fitting Medium Dog DoorCloser Pets Wood Fitting Medium Dog Door The robust construction and security locking panel are popular features of this dog door. The medium door is suitable for Spaniels, Terriers, Poodles, Beagles etc. up to a shoulder height of 460mm. Key Benefits: Self lining to 50mm thick ideal for all doors and walls.* Robust locking panel provides security and makes it clear to your dog when the door is locked. Silent action weatherproof flap with vision