Pet-Tek Catwalk W-CDTW wood fitting cat door designed to fit all doors and panels of wood, metal and PVC construction. Flap Size:155mm x 170mm Overall Size:250mm x 200mm Application:Wood Fitting Pet Size:Medium Cat Material:White Plastic This attractive wood fitting cat door is designed to fit all doors and panels of wood, metal and pvc construction. Due to its tunnel profile it will fit all panels from 11-52 mm (approx 3/8”- 2”). The pet door is simple to install. It has a weather seal flap to reduce draughts. All fixing screws are stainless steel, avoiding potential rust stains on door panels. The flap size is generous, (170 x 155mm (6 3/4” x 6”)), suits all cat breeds. A template is supplied for marking and cutting of the door panel complete with instructions and a 3 year warranty. The door flap is manufactured from UV stabilised high impact polycarbonate to endure the rigours of animal use A four way manual locking system is provided to allow the owner flexibility with the pet’s movements. In only position,will allow your cat entry but prevent the cat from leaving. Out only position, will allow your pet to leave the house but prevent the cat from re-entry. The locked position will prevent the pet from both entry and exit. The In and Out position will allow both entry and exit. Generous flap size 170 x 155 (6 3/4” x 6”) Virtually unbreakable flap using Bayer Polycarbonate UV Stabilized All Stainless Steel screws to prevent rusting No maintenance required Self lining door Brush weather seal to reduce draughts Fits Wooden, PVC and Metal doors and panels 11 mm to 52mm (3/8” - 2”) Four way locking system Suits all breeds of cats Self closing flap with magnetic location Simple to install, suitable for the average home handyman 3 year warranty Overall size 200mm x 250mm (7 7/8”x 9 3/4”).