Dimensional parameters | | Australian | Slimline | Slender |
| Nominal dimensions (mm) | 230 x 76 x 110 | 240 x 50 x 115 | 360 x 40 x 120 |
| Median dimensions (mm) | 230 x 76 x 110 | 236 x 49 x 113 | 352 x 40 x 116 |
| Weight per brick (kg) | 2.55 | 1.8 | 3.3 |
| Bricks per pack | 384 | 576 | 384 |
| Weight per pack (kg) | 980 | 1037 | 1268 |
| Bricks per m2 | 49 | 69 | 60 |
| Voids (%) | 36 | 40 | Nil |
Performance parameters | | | | |
| Unconfined characteristic compressive strength (f' uc ) (MPa) | ≥ 40 | ≥ 40 | ≥ 45 |
| Cold water absorption (%) | ≤ 6 | ≤ 6 | ≤ 9 |
| Initial rate of absorption (kg/m2 min) | ≤ 0.6 | ≤ 0.6 | ≤ 0.9 |
| Potential for efflorescence | Nil | Nil | Nil |
| Durability class | EXP | EXP | EXP |