A Staff locker is a small, usually narrow storage compartment. They are commonly found in dedicated cabinets, very often in large numbers, in various public places such as locker rooms, workplaces, middle and high schools, transport hub and the like. They differ in size, purpose, construction, and security. Lockers are usually palpably joined together side by side in banks, and are commonly made from steel, although wood, laminate, and plastic are other substance sometimes found. Steel lockers which are banked together share side walls, and are envision by starting with a complete locker; further lockers may then be adding by constructing the floor, roof, rear wall, door, and just one extra side wall, the existing side wall of the previous locker serving as the other side wall of the new one. The walls, floors, and roof of lockers may be either intention together (the more established method) or, more recently, welded together. Locker doors usually have some kind of aeration to provide for the flow of air to aid in cleanliness. These vents usually take the form of a series of horizontal slanting slats at the top and bottom of the door, although sometimes parallel rows of small square or rectangular holes are found instead, running up and down the door. Less often, the side or rear walls may also have analogous aeration. Locker doors usually have door stiffeners fixed vertically to the inside of the door, in the form of a metal plate welded to the inner surface, and protruding outward a fraction of an inch, thus adding to the heftiness of the door and making it harder to force open. Lockers are often manufactured by the same companies who produce filing cabinets, stationery cabinets (infrequently wrongly referred to as lockers, steel shelving, and other products made from sheet steel. There are also completely different types of door less locker design, such as one that is cylindrical in shape rather than rectangular. One such design eliminates the use of doors by contributing a cylinder open at the front: you place your items in, then rotate the cylinder into the housing, which turns the opening away, and secures the stuffing.