1.Lets Cats In and Keeps Dogs Out - The Cat Door Prop is the easy, convenient, and secure way to keep door cracked open for cat to go in while also keeping it narrow enough to keep dog out of room (if slightly larger than cat).2.Effortless to Use - Simply turn the knob or handle from either side to open the door and enter the room. It can't get any easier than that. Nothing to manually latch and unlatch every time you enter the room. Relatching in the propped position is even easier... just push or pull the door closed until the Door Latch Holder automatically latches onto the door plunger. That is it!3.Simple Installation, Non-Permanent & - Remove the existing strike plate from the door jam and replace it with the strike plate using existing screws. The Door Holder for Cats does not require any adhesives, cutting, or making holes in your door, making it removable, reusable, and a suitable solution for renters and travelers alike. The result - a dog proof cat litter box in seconds.4.Adjustable Width - The patented strike plate and door latch holder allow you to adjust the width of the door opening to keep the door ajar between 3 - 5.5 inches so you can set it according to the sizes of your pets. Simply loosen the little screws, slide the two pieces to the desired width, and fully tighten the screws until it locks and no longer slides. T8 Torx tool is provided in the product package.5.Strong, & Pinch Free - Made from thick, high-quality materials making it strong and durable so it will stand up even to big and determined dogs. Finally, a pet, dog, cat door stopper where there is no 'movement' when in the propped position which means no pinched fingers, tails, and no getting locked in or out of rooms.6.No Cut Cat Door - 's adjustable door latch lock is the cat door interior door alternative that gives cats back their space! No need for complicated child door locks or to cut out a kitty door. Stop fighting a bulky gate or a pet gate with cat door. You can't get an easier door holder to keep door open / ajar than this!7.Patented and Made in the - Pet Door Prop is patented (#11591836), small business owned, parent-invented, and made in the . And; unlike cheaper, less durable, imported, and copycat pet door holder options, is the original, is affordable, and made with high-quality materials. Since 2015, thousands of pet owners have loved and trusted Door Latch products.