Advanced construction on this Air Ventilator features a strong, cast-aluminum inlet housing joined to a flexible diffuser that easily withstands heavy abuse. Diffuser effectively dissipates static electricity (pre-attached bonding cable included). Maximum operating pressure of 150 psig. With no moving parts or electrical switches, the Hornet is ideal for use in hazardous environments. 3 hp model measures 33"L, 7.3" horn dia.