Partition size(mm) | Sound insulation coefficient(STC/RW) | Fire resistance time | Top and bottom expansion and contraction | Expansion plate | Adaptive track pulley | |||
---|---|---|---|---|---|---|---|---|
Net thickness | height | width | Top and bottom virtual position (mm) | Telescopic mechanism | ||||
40 | 2000-3500 | 600-1220 | 20DB | Optional fire-resistant glass | 0-50 | nothing | nothing | #126/#108 |