| Dimensional parameters | | Slender |
| Nominal dimensions (mm) | 360 x 40 x 120 |
| Median dimensions (mm) | 352 x 40 x 116 |
| Weight per brick (kg) | 3.3 |
| Bricks per pack | 384 |
| Weight per pack (kg) | 1268 |
| Bricks per m2 | 60 |
| Voids (%) | Nil |
| Performance parameters | | |
| Unconfined characteristic compressive strength (f' uc ) (MPa) | ≥ 45 |
| Cold water absorption (%) | ≤ 9 |
| Initial rate of absorption (kg/m2 min) | ≤ 0.9 |
| Potential for efflorescence | Nil |
| Durability class | EXP |
