A sliding guide rail assembly (20, 20a, 20b) is provided for slidably mounting a drawer or equipment (10) within a cabinet or chassis. The rail (33a) is formed from a sheet metal into a T-shaped section onto which a sliding means (40, 40a, 40b, 40c) fits and slides smoothly thereon. Guides (50, 120, 150, 160) also formed from a sheet metal into C-sections fitting over the sliding means (40, 40a, 40b, 40c) and operable to slide smoothly therewith. This enables the drawer/equipment mounted on the slide (20, 20a, 20b) to be drawn in and out with little effort or wear and tear.