Navitek Clear Grinding Helmet c/w Airkem Blower Unit TH3 Inward Leakage Classification Assigned Protection Factor 40 Points Navitek Grinding Visor Lightweight shell and longitudinal adjustment headgear Large viewing area Conforms to EN175B & EN166B Weight: 328g 1 Year Warranty Airkem Blower Unit • 4 airflows speeds from 180 to 220 l/m • Filtration: PRSL • Audible and visual clogged filter alarm • Audible and visual low battery alarm • Pre-filter and spark protection • Rechargeable 4 cell Lithium-ion battery with 10 hours running time supplied as standard • Optional 6 cell heavy duty Lithium-ion battery available with 14 hours running time • Warranty: 1 Year • Conforms to EN 12941