Wider range of sizes than available in the other two designs, Vertical airflow, Ratings up to 750 KW, 600 volts

cCSAus Approved for Class I, Division 2 locations where a hazardous gas is occasionally present, Ignition temperatures as low as 392°F (200°C), For ducts up to 240” (610 cm) wide by 120” (305 cm) high, Ratings up to 1000 KW, 600 volts

cCSAus Approved for virtually all Class I and Class II, Division 1 and 2 hazardous gas or dusty atmospheres, Ignition temperatures as low as 320°F (160°C) ,Six standard sizes to fit a wide range of ducts, Ratings up to 240 KW, 600 volts