How Many Treads or Steps Do I Need ?
| No. of Treads | Height to deck (mm) | Distance from deck (mm) |
| 1 | 350 | 250 |
| 2 | 525 | 500 |
| 3 | 700 | 750 |
| 4 | 875 | 1000 |
| 5 | 1050 | 1250 |
| 6 | 1225 | 1500 |
| 7 | 1400 | 1750 |
| 8 | 1575 | 2000 |
| 9 | 1750 | 2250 |
| 10 | 1925 | 2500 |
| 11 | 2100 | 2750 |
| 12 | 2275 | 3000 |
| 13 | 2450 | 3250 |
| 14 | 2625 | 3500 |
| 15 | 2800 | 3750 |
| 16 | 2975 | 4000 |
| 17 | 3150 | 4250 |