The Knauf Dritherm 32 Cavity Slab is a superior thermal insulation product designed for masonry walls. Measuring 1200 x 455 x 125mm, each pack contains four slabs that cover a total area of 2.18m2. Expertly crafted from non-combustible rock mineral wool, these slabs are perfect for improving energy efficiency and reducing heat loss in your property. The Knauf Dritherm 32 is simple to install, requiring no special tools or skills, and is suitable for both new builds and refurbishments.