Selective entry / Manual 4 Way Locking Cat Flap - WHITE - No. 917Designed specifically for cats.Greater degree of security.Helps to keep out strays and other animals.See through, tough and weather resistant flap.Easy to install in most doors, walls or windows.Installation depth: up to 54mm (2").Overall size: 224mm x 224mm (8 7/8" x 8 7/8").Cut out size: 169mm x 169mm (6 5/8" x 6 5/8").Glass cut out: 210mm (8 7/8") diameter circle.Max shoulder width: 135mm (5 3/8").Extendable tunnel NOT available for this model.3 Year Gurantee