Abstract: A prefabricated furniture for use in a room having a floor and a ceiling, comprises a plurality of vertical panel assemblies each including at least two joint tubes and at least three panels joined by the joint tubes so as to form one vertical panel assembly, the vertical panel assemblies being vertically arranged at predetermined intervals between the floor and the ceiling, each of the joint tubes being fitted at both opposite edge portions thereof into respective grooves formed in one or two edges of the panel of the vertical panel assembly, each of the joint tubes having plural female screws formed in both sides thereof at predetermined intervals, a plurality of horizontal panel assemblies each having a horizontal board, a plurality of attachments secured to both ends of the horizontal boards for attaching the horizontal panel assembly to the vertical panel assembly by means of plural male screws which pass through the attachment and engage the female screws of the joint tubes, and a plurality of adjustors

Abstract: A prefabricated partition wall for use in a room having a floor (11) and a ceiling (12), comprises an upper support (30) fixed on the ceiling (12), a lower support (36, 47, 60) fixed on the floor (11), a metallic joint tube (20, 61) extending vertically and having an upper and lower open ends, a fixture (32, 64) for fixing the upper open end of the joint tube (20, 61) to the upper support (30), a plurality of panels (13-17) each having at both edges there of two opposite vertical grooves of a shape corresponding to that of the joint tube (20, 61), an adjustor (35, 46, 53, 67) placed between the lower support (36, 47, 60) and the lower open end of the joint tube (20, 61) for supporting the joint tube (20, 61) and the panels (13-17) at their bottom portion in such a manner that the adjustor (35, 46, 53, 67) can be actuated to adjust the joint tube (20, 61) and the panels (13-17) together in a vertical direction so as to fix securely them in portion between the floor (11) and the ceiling (12).