Plenum Fans from American Fan Company feature bearing lubrication via extended lubrication lines and a rugged adjustable motor base. Shafts and bearings are sized for long and robust service life.
This is a new advanced plenum fan design. A product of the latest computerized design techniques (improving upon already proven designs) these fans are designed to save the user costs both in terms of energy consumption and a long trouble free life. Lower operating speed for a given performance level is the key to this feature.
American Fan Company's PL Plenum Fans have a unique 7-blade wheel with a specially developed blade shape that aids performance, lowers noise, and increases efficiency. This feature is the only high performance impeller of it's kind available in North America.
More Info - See PLB 12-08 Plenum Fans Bulletin