Premium built box. Ideal for Large breeds (Golden, Labs, Doodles, etc) or large litters! 6'x6' with ample 2"x6" wide lifesaver ring. (The ring allows the mom to lay down without crushing puppies against the outer wall.) The ring doubles as a second deck in the box for the puppies to climb up and run around. REMOVABLE DOOR so pups can get in and out easy when it's time to start potty training the litter. Hasn't been used in 2 years, pressure washed and sun dried this week. It's a pristine safe place for your expecting K9's. Large enough to place a "kiddy pool" inside of the floor of the box, for the birth, if you wish. (Easy clean up for mama dog.) FCFS. Pick-up only. This box takes A LOT of work out of raising a litter of these amazing dogs!