Abstract: An assembly of prefabricated wall and junction units that can be assembled to provide utilities such as water, power, communications and sewer to a plurality of different living spaces. The prefabricated units are uniform and can be assembled together in a rapid fashion to facilitate building of a temporary or permanent living space.

Abstract: A multipoint locking mechanism for an enclosure such as a mailbox which is gravity biased into an unlocked position. The locking mechanism includes a cylindrical lock member that extends through the panel and engages with a multipoint locking member that is rotatable about an axis that extends substantially the width of the panel. The rotatable locking member includes a plurality of hook members that engage with receiving openings formed on the door and further includes an engagement member that engages with the cylindrical member so that the cylindrical member can urge the engagement member and thus the rotatable member into a locked configuration. By manipulating the cylindrical lock member into an unlocked configuration, the engagement member is gravitationally biased to rotate so that the hook members are removed from the engagement member on the door thereby unlocking the door.

Abstract: The top door of the letter locker mailbox covers both the incoming mail chute, and the outgoing mail tray. This configuration provides the mail carrier with one or two less significant arm movements in servicing the mailbox. The door, chute and tray are weather protected by a solid, two inch weather shield. The top door is secured by a full length one inch magnetic strip. The bottom mail receiving and storage compartment is secured by a locking door, secured at the top center by a mail handling utility lock. The door is protected from theft by prying, by the weather security shield above, and weather security shields on both sides. The bottom door stainless steel rod hinge is permanent, secured in the assembly at the time of manufacturing, and cannot be pried. The construction and design of the entire mailbox is a unique, superior improvement. The entire compartment of the mailbox is constructed of Electro-galvanzied steel, 4 to 6 gauges heavier than comparable mailboxes.