| Ref. | Material | L(mm) |
|---|---|---|
| GS.35 S | Galvanized steel | 350 |
| GS.35 SI | Stainless steel | 350 |
| GS.40 S | Galvanized steel | 400 |
| GS.40 SI | Stainless steel | 400 |
| GS.45 S | Galvanized steel | 450 |
| GS.45 SI | Stainless steel | 450 |
| GS.50 S | Galvanized steel | 500 |
| GS.50 SI | Stainless steel | 500 |
| GS.55 S | Galvanized steel | 550 |
| GS.55 SI | Stainless steel | 550 |