Staywell 4 Way Locking Cat Flap with Tunnel (White) Staywell The World\\\'s Largest Selling Pet Door.Freedom For You and Your Pet!Control your pets activities with a Staywell 4 Way Locking Cat Flap designed with a \\\'See Through\\\' rigid flap.The Manual 4 Way Security lock \\\'in only - out only - opened - locked\\\' system allows you to control the access from inside and outside.- For Cats up to 15lbs(7kg)- Manual 4 Way Security Lock.- Weather resistant magnetic flap and cover for improved energy efficiency.- With tunnel for hollow/thick doors or walls.- To fit any door to a maximum depth of 54mm (2\\\").- Overall Size 224mm x 224m (8 7/8\\\" x 8 7/8\\\")- Cut-out hole size: Wood 169mm x 169mm (6 5/8\\\" x 6 5/8\\\") Glass 210mm (8¼\\\") diameter.- Simple to fit. Easy to use.- Fitting instruction and screws enclosed.- 3 Years Manufacturers Guarantee.Important:It is not possible to cut holes in toughened glass or double glazed units except at the time of manufacture. Please contact a reputable glazier.