Abstract: Showroom furniture construction system, composed of: a in mounted situation vertical stand, consisting of two vertical profile beams (1), which, on the top and bottom, are connected by cross beams (2), whereby the two vertical profile beams (1) are fitted with a groove (3) in longitudinal direction, in the bottom of which at desired distances a number of pin holes (4) is fixed: distance blocks (6) of which the pins (5) fit into the holes (4) of the groove (3): place-tray at one side and at one end fitted with protruding pins or pin holes (9): place-tray (8) supporting beams (12), at the top fitted with pin holes of protruding pins (10): place-tray supports (11), at one end fitted with two protruding pins (10) at the side planes and the bottom of the side planes fitted with a rectangular recess: vertical, compound supporting beam, at the inner surfaces of two parallel vertical beams, fitted with grooves at regular distances and starting from the long sides: locking blocks (13 ), fitted with protruding pins at

Abstract: A furniture construction system has a pair of spaced vertical stands(13) supporting a plurality of shelves(8). Each stand has a pair of spaced profile columns and a longitudinal groove(3) in opposed faces of the columns. Spaced pin holes(4) are in the bottoms of the grooves and a distance block is in the opposed longitudinal grooves at similar heights and each block has a pin(5) received within a pin hole. A supporting beam(7) is on each pair of blocks and has a sideward extension(15). Each shelf rests on a sideward extension and has a thickness equal to the distance between the upper surfaces of the beam and the sideward extension thereon.