Twin(UB)-IS50R-215dB-50G(200)
2 x 15mm Siniat dB Boards, Twin Siniat IS50/Rx I-Studs at 600mm centres, 50mm glass mineral wool, 2 x 15mm Siniat dB Boards
2 x 15mm Siniat dB Boards, Twin Siniat IS50/Rx I-Studs at 600mm centres, 50mm glass mineral wool, 2 x 15mm Siniat dB Boards