Allegro offers a complete line of NIOSH-approved respirator masks, hoods, helmets, air-source equipment and accessories. Low-pressure systems are manufactured with a continuous-flow supplied-air full-mask, half-mask, hood or helmet, in addition to a supplied air source and 50 or 100 feet of breathing air hose. High-pressure systems include either a hood or a blasting helmet.

Allegro Industries, Garden Grove, CA.