Ready-made, d.i.y acoustic sound foam complete with Roxul ,ROCKTECH S (SLAB).
Dark blue in color.
http://www.rockwoolasia.com/products...ktech+s+(slab)
6pcs - (l) 1200mm x (w) 600mm x thickness 100mm ( 2pcs x ROCKTECH )
4pcs - (l) 1200mm x (w) 600mm x thickness 150mm ( 3pcs x ROCKTECH )...