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ROCKWOOL Rocklap mineral wool insulation sections feature a factory-applied foil with a self-adhesive lap for quick application. Pre-slit for ease, they offer acoustic and thermal insulation for HVAC pipes with temperatures from 0C to 250C. Suitable for industrial and residential use, these sections attach swiftly to pipework saving time. They're 20mm thick, 1m long, and fit pipes 17mm-60mm in diameter. Simply seal joints with backing tape after application. These sections are versatile, convenient, and high-performing. They come in different widths and comply with Class 0 surface standards, ensuring safety and efficiency.. Rockwool Rocklap 20mm Wall x 1m Foil Faced Pipe Insulation - 22mm Mineral Wool PBR2120