Features: Let39;s Cat in and Keeps Dogs Out: The Cat Door Rack-latch fits most types of doorknobs, hangs easily on it, and fits safely and securely holder the door, protecting your cat39;s personal-space from break by large animals Pet-latch easily hooks onto most doorknobs and will safely hold the door,protecting your cat private space from larger animals new pet door holder Holds most doors open 4inch,keeps the door at the perfect width open-very sturdy and very easy to use. Simpler Alternative-No tools needed: The flexible-latch cat door holder no need to cut permanent holes, no complicated measurements, no adhesives to install indoor cat doors, no damage to your paint, no damage to your house, saving time, effort and money The pet door-latch provides cat and dogs with their own private space, non-invading each other39;s territory, and space for you and your furry companion 100 Satisfaction: If you have any question, please feel free to contact us.We will try out best to help you. Notice: 1.Actual color may be slightly different from the image due to different light effect 2.Please allow 1-3cm deviation due to manual measurement Description: Material: PP Size: Ear shape: 24.6*8.5*0.3cm, Fish shape: 33.5*8.5*0.3cm Package List: 1/2PCS Cat Door Holder-Latch