Give your cat indoor or outdoor freedom with added protective features including a 4-way security lock and a weather-resistant magnetic flap. This energy-efficient cat flap is easy to install with its universal fitting for walls and doors.White. 4 Way Locking Cat Flap (The old code for this cat flap is Staywell 19)Cat-friendly transparent flapCat Safe ActionWhite FinishWipe down easy clean (No Solvents)Cat control - 4-way security In Only, Out Only, Open or LockedSuitable for fitting in a thin panel or single glazed doors, or with purchase of additional tunnel extensions (REL940EFS) thick or hollow doors or double glazing (only at the time of manufacture)DimensionsOverall size : 224mm x 224mm, (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") DiameterPet Max shoulder width : 162mm (6 3/8")