Anlet Three-Lobes Blower FT4-LE-SERIES Initally nearly all blower were of the two lobed type, and althoung th design of the three-lobed type
was understood o other the adventages lower noise and vibration as greater efficiecy, construction was difficult Anlet alone has been able to produce high-performance yet low-cost blower using a patented three-lobe rotor maching tool.