Marine 4" In-line Blower for Boats - Yellow Tail - 220 CFM - Shurflo INSTALLATION of the Yellowtail blower is made easy with extended barbs and slotted mounting bracket SEALED Motor and Wires for Corrosion Resistance SEALED Motor Shaft for Moisture Protection and Long Life SLOTTED Baseplate for Easy Mounting. 6 BLADE Nylon Fan. Heavy Duty Fan Housing MANUFACTURER Part Number is 277-4100