Information White Finish 4 Way Locking Cat Flap Cat friendly transparent flap Cat Safe Action White Finish Wipe down easy clean (No Solvents) Cat control - 4 way security In Only - Out Only Open or Locked Suitable for fitting in thick or hollow doors or double glazing (only at time of manufacture) Dimensions Overall size: 244mm x 244mm (8 7/8" x 8 /78") Cut out size wood: 169mm x 169mm (6 5/8" x 6 5/8") Cut out size Glass: 210mm (8 1/4") Diameter With a 60mm (2 1/4") tunnel. Pet Max shoulder width: 162mm (6 3/8") Overview Suitable for cats 4 Way Locking Additional Tunnels available Fits Glass, Walls, Glass - Windows, Doors - Wooden, PVC, uPVC & Metal