Abstract: A suspended ceiling system which uses only two components to form main beams of an inverted T-shaped cross-section, cross beams of an inverted T-shaped cross-section and wall hangers of an L-shaped cross-section. A first, upright one of the components has a generally rectangular cross-section with one longitudinal edge recessed. The second component has a central groove for receiving the first component. The sides of the groove are stepped to give two steps which complement the recess edge of the first component. The first component can be fitted with its plain edge in the central groove to form an inverted T-section; with its recessed edge engaging one step to form an L-section, and with its recessed edge engaging the other step to form a J-section. The system may conveniently be sold in kit form comprising the two components and, possibly, joining members for joining cross beams to main beams.