General description75mm Knauf APR insulation rolls are designed to effectively reduce noise in floors, walls, and stud partitions.They feature a friction-free fit between joists and studs for easy installation.Technical specificationsThickness: 75mmCoverage per roll: 17.4m²Other informationRolls may be supplied in Isover and Superglass brands depending on availability at the time of order.All rolls have the same specifications and price.