Rockwool RWA45 Acoustic Insulation Slab 1.2m x 600 x 100mm (L x W x T) Pack of 4 is a robust insulation solution for a range of general building projects as well as specialist specifications such as commercial, leisure, industrial and more. The insulation provides excellent acoustic, thermal and fire performance. Manufactured from high quality resin, used to provide thermal wall insulation. Designed to provide insulation on walls, ceiling and floors with a thermal conductivity of 0.035W/mK. The structural fibre work of the slab helps in noise absorption on the surface of walls, ceilings and floors. It is fixed between two steel frames and is butt jointed.