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 are 170mm (height) x 150mm (width). Please check carefully, 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