Voltage：12V / 24V Air Flow (cfm/cmh)：145/247 Intake Pipe Dia：3"/76 mm Designed for efficient, high output operation, these blowers feature our exclusive front and rear shaft seals and corrosion resistant motor housings for long life. Compact and easily installed on any flat surface, SEAFLO in-line blowers provide higher air flow, lower amp draw, and quieter operation than standard blowers.