| Item NO | MT03S | MT04S | MT05S |
| Aluminum model: | 6063 T5 | 6063 T5 | 6063 T5 |
| Aluminum thickness: | 1.2 mm | 1.2 mm | 1.2 mm |
| Max loading: | 150 kgs | 150 kgs | 150 kgs |
| Extension Length: | 360 cm | 470 cm | 580 cm |
| A step ladder height: | 175 cm | 226 cm | 280 cm |
| Scaffolding Height: | 99 cm | 121 cm | 154 cm |
| Folding size: | 101*37*28 cm | 126*37*28 cm | 154*37*28 cm |
| Space between rungs: | 28 cm | 28 cm | 28 cm |
| Total steps: | 4 folds * 3 steps | 4 folds * 4 steps | 4 folds * 5 steps |
| N.W/G.W: | 10.5/10.9 | 12/12.5 | 13.6/14.1 |
| Packing size: | 99*37*28 cm | 124*37*28 cm | 152*37*28 cm |
