SKU: Designed for large confined spaces. Delivers high output for drawing or pushing air. Constructed with durable metal housing. Standard and explosion-proof 16 blowers have a 1/2 hp motor. High-output blowers have a 2 hp motor with 3-blade impeller on the 16 model and 4-blade impeller on the 20 model. Safety orange color. Explosion-proof blowers include single phase motor and are ULョ/CSA listed and NEMA rated 115 V plug. Meet Class l, Division 1 and 2, Group C and D, Class ll, Division 1 and 2, Group F and G.Category: Confined Space