• Fan & blower - Split phase, Dripproof motors
• Resilient base motors
• Ball bearings (except as noted)
• Overload auto
• Variable torque on two speed motors
• Extended thru-bolts, as noted
• Heavy gauge steel frame and base
• 48Y and 48YZ frame have 48/56 frame mounting holes
• UL recognized and CSA certified
• Model 048S17D2107