Positive pressure ventilation fan for effective control of heat, smoke and toxic gases. Powered by a Honda 5.5hp air cooled engine and housed in a compact frame. Key features include 24inch diameter fan made of 10 glass reinforced polymide blades protected by a strong thermoplastic shroud, electro polished stainless steel frame fitted with retractable handle and pneumatic tyres for easy manoeuvrability. Quick tilt mechanism allows fan to be set at optimum angle for smoke control.