Description: Adjustable Door Strap: pet door strap helps to keep dog out of the Litter Box or Feeder by use of adjustable door strap and to let the door open properly, the gap is wide enough so cats can easily enter, and narrow enough so dogs and babies cannot go through . Convenient to Use: easy to install in a few seconds, and it is very convenient to use. Peel and stick the door, and the door frame uses strong adhesive. This simple lock and unlocking latch allows you to quickly and easily . Feature: the handy cat door stopper will prop your door open and prevent your pets from accidentally closing the door. It is also preferred over a dog gate with cat door or cat doors for interior doors . How It Works: pet door strap allows the door of any indoor room to be opened wide enough so that the cat can easily enter and exit . Simple and Works: simple, convenient, and it works! Skip the hassle of a pet gate with cat door, don not cut a permanent hole to install an interior cat door, perfect solution to dog proof litter box and dog proof cat feeder . Specification: Material: Cloth Size: Width: 3.8cm/1.50 inch, Adjust: 20cm-30cm/7.87inch-11.81inch Package Includes: 1 Piece Cat Door Latch Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful online shopping!