Friday, 08.06.2010 UBD-12,15,18,21,24,30,36,40,42,48 are all belt drive models that have fan bearings that are factory lubricated for extended service. UDD-12,15,18,21,24,30,36,40,42,48 are all direct drive models.
Friday, 08.06.2010 Reversomatic manufacture tube axial fan as well for commercial use and have these models to choose from, RBD/RDD 12,15,18,21,24,30,36,40,42,48 are all models for tube axial fans that are designed for use in low to medium pressure ducted ...
