General description50mm 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: 50mmCoverage per roll: 16.2m²Other informationRolls may be supplied in Isover and Superglass brands depending on availability at the time of order.All rolls are of the same specification and price.