Suspended ceiling made up of a twin frame of galvanised sheet steel profiles installed at different levels (D). The primary frame is made up of Pladur® T-60 profiles hung from the framing by means of Pladur® T-60 hanger brackets and Ø 6 mm threaded rod. The secondary frame is made up of Pladur® T-60 profiles spaced 300 mm apart, hung from the primary frame by means of Pladur® T-60 hanger brackets supported around the perimeter on angular or U track profiles which are attached mechanically along their whole length. Pladur® Fon+ plasterboards are screwed perpendicularly onto the secondary frame. Commensurate amounts of anchors, hangers, hangers, screws, resilient/acoustic perimeter joints, joint compounds and tapes, etc. Completely finished with Quality Level 2 (Q2), Level 3 (Q3), Level 4 (Q4), according to the surface finish (to be determined by the design). Installed according to Pladur® recommendations, UNE 102043 Standard and CTE requirements.