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Fitted with vent valve for perfect setting of the elevated standard push-in force of the spring depending on the weight of the hatch/peak. Setting is possible only when fully extended. Fitted with stainless steel end eyelets, 8 mm diameter bore, and key for the vent valve.
| Ref | Open mm | Stroke mm | Force kg | Ø body mm | Ø rod mm |
| 3801000 | 272 | 81 | 40 | 15 | 6 |
| 3801003 | 377 | 132 | 70 | 18 | 8 |
| 3801007 | 522 | 205 | 70 | 18 | 8 |
| 3801009 | 622 | 255 | 70 | 18 | 8 |
| 3801011 | 752 | 315 | 120 | 23 | 10 |
| 3801014 | 972 | 415 | 160 | 28 | 14 |
Choosing a gas spring ----->
