Attic Fan Cyclone Solar Powered Ventilation Replacement Motor kit Cat. No. SD-RM-A/P Weight 4 lbs	$103.95
Replacement Motor for Solar Dynamics SD-20 Solar Fan (A/P Motor) The diameter of this new motor is 1/4" larger than the MK motor, so were supplying it as a kit with new motor brackets and a new fan blade. The fan blade is a one-piece aluminum 12” x 5 blade with optimum pitch.