G | F | E | D | C | B | A | تعداد پله | مدل |
MM | MM | MM | MM | MM | MM | MM | ||
250 | 200 | 190 | 709 | 533 | 1330 | 493 | 2 | SFF215-S |
250 | 200 | 190 | 709 | 533 | 1580 | 493 | 3 | SFF315-S |
250 | 200 | 190 | 709 | 533 | 1830 | 493 | 4 | SFF415-S |
250 | 200 | 190 | 709 | 533 | 2080 | 493 | 5 | SFF515-S |