iEvac®Smoke/Fire Hood is certified to the American National Standard and NIOSH 42 CFR 84. iEvac®offers protection against carbon monoxide, smoke, hydrogen cyanide, ammonia, chlorine, formaldehyde, hydrogen sulfide, sulfur dioxide and more. Twin filters and clear hood material for an unobstructed field of view. One universal size, maintenance free. Visit www.elmridgeprotection.com