Certification: CE EN12492 (1), EN397. ANSI Z89.1 Type I Class E, EAC, AS/NZS 1801, GB 2811-2019 . The helmet meets the standard EN 12492 except for ventilation. Ergonomic full-face safety helmet for work. You can find the ventilated helmet model here . Designed for versatile use in both fall-risk conditions and flat-surface work. Recommended model for example in industrial use and in the electrical and energy sectors. The new Petzl Vizir eye protection, Protector visor, Vizen full-face protection or Vizen Mesh mesh visor can be quickly attached to the helmet using the EasyClip quick-attach pins included in their delivery, which are replaced by the black pieces on the sides of the helmet. All Bollé Safety electric welding masks can be attached accordingly with adapters available as accessories. Detachable by simply pressing the buttons. Side mounting slots for hearing protectors. Compatible with most common helmet-mounted hearing protectors. Identical mounting slots on the front and back for e.g. a headlamp quick-release plate or ID card holder. Integrated mountings on the sides for attaching a headlamp with a headband. Mounting points on the back for a neck protector. NOTE! This new Vertex Vent is not compatible with the Vizir and Vizir Shadow eye protectors designed for helmets manufactured before 4-2019, nor with the Vizen full-face protectors. You can identify non-compatible models by the fact that they have mounting screws. Compatible new models have EasyClip quick-release mounting points. The size is adjustable to dimensions, 53-63 cm.