Abstract: An adjustable latch assembly for the lock assembly of a pull-down door used to close a container space such as the cargo bay of a van or van body of a truck or similar vehicle. The adjustable latch assembly includes a face plate designed to be mounted flush with the floor of the truck bed. The face plate has elongated openings on either side thereof for receiving the locking tongue of a lock assembly. The opposing openings are separated by a bridge surface which covers the adjustable latch mechanism of the present invention. The adjustable latch mechanism includes opposing legs protruding from either side of the bridge with a foot on the opposite end of each leg. Each of the legs has an elongated slot that serves as a guide mechanism for the adjustable latch striker extending beneath the bridge and substantially parallel to it. The striker has opposing ends with holes bored through each opposing end.