Type : tl & ts - tube axial flow fan with long casing & short casing with two flangerswheel diameter : 300mm - 200mmperformance : 1250 -280000 cmh upto 80mm wg sp,mounting : duct, floor & well up to 1200mm dia.application : ideal for installation in hospital, school, research labs, exhaust air & supply air system, it is most often used in hvac duct system