The Structural Helmet 604 is an American-style (Bourke) structural firefighting helmet. Its high-resistance fiber shell incorporates a quick-release system for fast removal in entanglement situations. The flip-up face shield can be raised or lowered even with gloves on, and the Ratchet adjustment system ensures a secure fit with SCBA masks.
| Standard | EN 443:2008 |
| Shell material | High-resistance fiber |
| Face shield | Flip-up face shield + anti-corrosion goggles |
| Adjustment system | Rear Ratchet — multi-size |
| Compatibility | SCBA masks |
| Includes | Chin strap · flashlight holder · neck guard |