Wheel Diameter- 300mm – 2000 mm. Performance- 1250 – 280000 CMH upto 80 MM WG SP. Mounting- Duct, Floor & Wall. Application- Ideal for installation in Hospitals, Schools, Research Labs, Exhaust Air & Supply Air System. It is most often used in HVAC duct system. TL Series- Tube Axial Fans are AMCA Certified for Air and Sound Performance for 500-1800 mm diameter in size.