Abstract: An enclosure comprising a container having a bottom, a sidewall attached to the bottom and terminating in an open end. The sidewall has an inner wall surface opposed to an outer wall surface. A closure member made complementary to the open end can be removably affixed thereto. The closure member provides a downwardly extending lip having an inner wall surface opposed to an outer wall surface, one of which slidably adjoins one of said inner and outer wall surfaces of the container wall when the closure member is mated respective to the container. A fixed locking member having an inclined rail thereon is attached to the outer wall surface. Also provided is a sliding locking member having an upper flange that bears against the top of the closure member and a lower rail engaging member of a size to receive the rail therewithin to thereby force the closure member toward the container bottom when the sliding locking member simultaneously engages the closure member and the fixed locking member.