Dog and Cat Door (for Screen Doors) Small This is a dog and cat door specifically for screen doors. It's a pet door that easily attaches to the screen door by sandwiching the indoor frame and the main body, and securing them with fixing screws. The opening dimensions of the door are 170mm (height) x 150mm (width). Please be sure to check the size as it may not be suitable depending on the size of your pet. It closes naturally with the power of magnets. Product Specifications Materials: 2 frames (AES), door (methacrylic resin) Neodymium magnets, magnet receiving hardware Parts: 8 fixing screws (stainless steel) External Dimensions: H230 x W190 x D12 Opening Dimensions: H170 x W150