Shurflo 4 Yellow Tail In-Line Bilge Blower The Shurflo Yellow Tail Bilge Blower provides ventilation for engine compartments, bilges, galleys, and head closets. Shurflo has developed a unique nylon fan that includes six blades to ensure high performance and efficient ventilation. This in-line blower was designed with a wider baseplate and oval slots for ease of installation. Key Features 6 Blade Nylon Fan for corrosion resistance ABS Heavy Duty Fan Housing Heavy duty shaft seal for moisture prot