Standard Specification : BS EN 1994
FEATURES
| Grade | Duct Width, W1 (mm) | Minimum Rebate Width, W4 (mm) | Rebate Depth, H (mm) | Length, W2 (per Pair) (mm) | Total Mass (kg) |
|---|---|---|---|---|---|
| Heavy | 225 | 395 | 75 | 500 | 48.0 |
| Heavy | 300 | 470 | 75 | 550 | 68.0 |
| Heavy | 380 | 550 | 75 | 550 | 80.0 |
| Heavy | 400 | 570 | 75 | 550 | 85.0 |
| Heavy | 450 | 620 | 75 | 600 | 96.0 |
| Heavy | 600 | 770 | 75 | 600 | 120.0 |