Patty Both 4 Way Locking Pet Gate Dog Door Cat Flap with Telescoping Frame for Window/Door (Brown) A secure, double point 4 Way locking mechanism gives complete control of your pets movement. Material: Made from durable ABS plastic. Recommended for thin doors and screens up to 2 inch thick asy to install; waterproof and tightly sealed to prevent energy loss, brush strip eliminates noise from the door closing Entire flap including frame: 25 x 23.5 x 5.5 cm/9.8*9*2 inch, inner flap: 18 x 19.6 cm/7.4*7 inch