SUITABLE FOR MEDIUM DOGS: Accommodates dogs up to a shoulder height of 460mm (18") such as spaniels, terriers, poodles, and beagles, and may also be used by cats SECURE LOCKING PANEL: Robust locking panel ensures security and makes it clear when the door is locked to prevent unwanted access WEATHER-PROOF FLAP: Draught- and weather-proof fully brush-sealed flap with magnetic closure and a rain-proof seal to keep your home insulated EASY INSTALLATION: Self-lining up to 50mm (2") thick – ideal for all doors and walls, with the option to line walls over 50mm thick using 2mm plastic or metal sheeting PRODUCT SIZING: Cut-out size of 242mm (9½") width x 300mm (11¾") height, flap opening size: 220mm (8¾") width x 280mm (11") height, overall size: 290mm (11⅜") width x 350mm (13¾") height