We love our basement access door! We have a dog and two cats accompanying us and they all ride in the back seat of the truck in transit to our next destination - we utilize the basement to hold our chocks and set up equipment but once we are set up we set the empty crates in the truck bed and the basement is where the cat litter box goes - fits perfect, easy to access and clean daily, and the basement door stays open for the cats, only closing it long enough to clean the litter box. Works great for us and keeps the dog from getting into the mess.