Wide range of applications: Use adjusters to customize door widths wider or narrower. Great for stopping crawling babies, early toddlers, older dogs, puppies and even cats from entering designated rooms with litter boxes or cat feeding stations. Such as laundry room, bathroom, closet, bedroom, storage room or office Up to 4" wide door seam Adjustable door straps and door stopsThe simpler way to keep dog out of room with litter box and cat food while still allowing your cat to have easy accese. you will safely hold the door. FUNCTION: 1. Adjustable: Adjust the width of the door to be wider or narrower to suit the size of your kitten and puppy. 2. Customizable: Install on the back or reverse side of the door for greater strength, compatible with many door types. EASYIt is preferred over a dog gate with cat door or cat doors for interior doors. Skip the hassle of a pet gate with cat door. Don't cut a permanent hole to install an interior cat door. SAFETYThe tough plastic material keeps the door open, keeping your pets and children safe. won't ruin your paint, and won't damage your home