DetMar® Tunnel Blower.
Safety first! Make sure your bilge is free from ignitable fumes with this high-quality Blower from DetMar®. The innovative design places the motor in the center of the airflow for cooler, quieter, and more efficient operation.
So quiet, it can even double as an exhaust fan in your head and galley! With 4" intake, remote mounting bracket included. 4" blower measures 5 1/4"l.