Abstract: Partition for rooms comprising a perimetral profile which can be rigidly secured by means of screws to the masonry work of the section inside which the partition is to be inserted and a base profile which can be fixed inside a seat of the perimetral profile. This base profile is symmetrical with respect to a longitudinal mid-plane and has at least two longitudinal channels arranged in mirror symmetry. Several accessory profiles are envisaged, said profiles being provided with feet which can be inserted into the longitudinal channels and can be fixed to the base profile by means of screws. The retaining portions of two profiles joined together define a central groove inside which a panel is fixed.