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 | ||||
66 | 2000-4000 | 600-1220 | 34-36db | 2h | 0-25 | Normal one pull/jack | One time linkage with three outward extensions | #130/#126/#110/#108 |