Half door and two person lockers use as much space as a single full door locker, but they are split into two units, which doubles the number of lockers overall. These are extremely popular because they are a nice middle ground between full door and box lockers. They provide a moderate amount of storage space while also being more efficient on overall space than full door lockers. Used half door lockers are one unit over the other, each unit being the same with as a full door locker. Two person lockers are two vertical units side by side, which are the same width as one full door locker as well. They also have two small shelves overhead for storage of small items.
Used lockers are typically small storage compartments that vary in size and shape, and usually has the option of locking shut. They are useful in schools and locker rooms to anywhere where secure storage is desired. There are many different styles, including box lockers, half door, full door, and triple tear. There are also specialty lockers like garment and two person lockers with hat shelves.