Abstract: A lock for a cabinet cassette having a drawer comprises a frame structure which carries on one hand a locking bar (47) passing through an opening (50) in a frontal part (23) of drawer, said bar being turnable and projecting from the inside of said frontal part (23), and on the other hand a handle connected to the bar. At least one fixed projection (54) is connected to the frame structure, said projection projecting from the back side of the frontal part, the locking bar (47) being, by turning the handle (48), movable between on one hand a locking turned-up position in which the bar engages behind an upper vertical flange (16) of the frontal frame (6) of the cassette and on the other hand a liberating turned-down position in which the bar is located below the upper side (55) of the projection (54).

Abstract: A kit is provided for cassettes for a drawer cabinet. The kit includes two pairs or guide rails (28, 28'; 29, 29') which are provided as supplements and are mountable when so required. A first U-shaped rail (28, 28') is connectable at a rear end with the cassette (1), in the area of the rear wall (10) of the latter, and at a front end with the frontal frame (6) of the cassette. At its front end, the first rail has a roller (34) located at a level beneath the lower one (31) of two U-forming flanges. A second rail (29, 29') is at opposite, front and rear ends connectable to a side part (25, 25') of a drawer (5) for use with the cassette. This rail has on one hand a longitudinal, projecting flange (37) arranged to abut against the roller (34) of the first rail, and on the other hand a roller (40) at its rear end arranged to engage between the flanges (31, 31') of the U-rail. A cassette for a drawer cabinet includes similarly designed pairs of guide rails.