Bharat Marketing Is Leader Suppliers Saint Gobain Sound Bloc Gypsum Board We Are wholesalers in Bangalore. Gyproc Sound Bloc is a special gypsum board which consists of an aerated gypsum core encased in and firmly bonded to, strong paper liners that are blue. They are manufactured through a special process which gives it excellent sound insulating properties. Application Designed for use in drywall partition systems where greater levels of sound insulation are required. Identification Blue face paper Brown reverse side paper Manufacturing Standards IS 2095 - Part 1, 2011 / EN 520: 2004, Type D Thermal Conductivity 0.25 (W/m°K ) Specification 12.5mm board, R = 0.052 WIDTH (MM) 1200 LENGTH (MM) 1830 EDGE TYPE TE/SE 15mm board, R = 0.062 WIDTH (MM) 1200 LENGTH (MM) 1830 EDGE TYPE TE/SE