Abstract: A barn door includes vertical members at its ends and lateral members extended between the vertical members which the vertical and lateral members being interlocked where they meet. To this end, the vertical members are channel-shaped, each having a front and a rear wall along with a end wall that connects the front and rear walls, it being formed integral with both. Each vertical member has vertical ribs which project toward each other from its front and rear walls. The lateral members, on the other hand, have vertical slots in their side walls. The ribs of the vertical members snap into the slots of the lateral members and this interlocks the vertical and lateral members. The joints so formed are rendered more secure with screws which pass through the front and end walls of the vertical members and into the side walls of the lateral members. A siding material is attached to the lateral members and at its ends projects under a lip on the front walls of the vertical members.

Abstract: A track has walls which enclose a hollow interior and among these walls are two laterally directed flanges which are separated by a slot that opens downwardly out of the track for the full length of the track. The track contains trolleys having wheels which roll along flanges of the track and the trolleys carry hangers which depend through the slot in the track and are attached to a door or some other suspended device. One of the trolleys also carries a latching mechanism which engages a keeper located within the track to secure the trolleys and suspended device in a predetermined position along the track. The latching mechanism includes a latch bar which pivots on the trolley between engage and release position and a spring which urges the bar to its engage position--the position in which it will engage the keeper upon encountering the keeper.