This manifold box is made of powder coated carbon steel and has a locking door. The dimensions are 40 x 29 x 4-1/2 in. It is used to protect wall or ceiling mounted manifold systems to conceal or protect system from damage. This box fits all types of 1 to 1-1/2 in manifolds, the depth can be expanded up to 6 in and the box height off the floor is adjustable.