Made this to prop our bedroom door open as it is slightly tilted and swings closed by itself. We also have a heat register behind where the door opens so we used to stuff a piece of clothing under to keep it open about half way to let the heat into the room fully. Double-side tape the top part and attach to the door, works for carpeted floors. For hard floors, I bought some rubber trim and added it onto the end and it gripped the floor. It needs to be attached to a smooth door or it will come off eventually.