Gypsum board partition features:
(1) Sound insulation. The double-layer sound insulation wall composed of a double-layer separated sound insulation wall and a hollow slab composed of a thin plate has an acoustic index of 40 to 50 decibels.
(...
High Quality Gypsum Board
date_rangeMar 03' 2011 / (China )
Regular plasterboard:
Size: (mm)1200*2400 1220*2440 1200*3600 1220*3600 1200*2500 1220*2500
Thickness: ( mm) 6.4 to 15.9
White paper-faced, square edge and tapered edge