Built tough with durable, corrosion-resistant.100 in. thick smooth aluminum construction Corrosion and scratch resistant black powder-coated finish Contents protected by a side-hinged barn style door and aluminum continuous hidden hinge with solid 1/4 in. pin Shut out weather and theft with 3-point locking, die cast compression latch system Can be mounted on either a flat surface or under-bed (under-bed installation requires mounting brackets, sold separately)