| Dimensional parameters | | Australian | Slimline | Slender |
| Nominal dimensions (mm) | 230 x 76 x 110 | 240 x 50 x 115 | 290 x 50 x 90 |
| Median dimensions (mm) | 230 x 76 x 110 | 236 x 49 x 113 | 290 x 50 x 90 |
| Weight per brick (kg) | 2.55 | 1.8 | 1.9 |
| Bricks per pack | 384 | 576 | 540 |
| Weight per pack (kg) | 980 | 1037 | 1036 |
| Bricks per m2 | 49 | 69 | 55 |
| Voids (%) | 36 | 40 | 41 |
| 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 |
