Rule 4" In-Line Blower

The Rule 4" In-Line Blower is an essential ventilation solution for serious boaters, designed to facilitate engine compartment air exchange. Whether you're embarking on a weekend fishing trip or spending extended hours offshore, this blower helps prevent dangerous fume accumulation and enhances engine longevity.

This compact unit operates quietly and efficiently, effectively removing stale air and explosive vapors from critical areas of your boat. Constructed with Rule's renowned reliability, the 4" in-line blower is built to endure the harsh marine environment, including salt spray and humidity. Its inline design allows for flexible ductwork installation, making it adaptable to various hull designs.

Ideal for anglers and cruisers in hot climates or confined engine bays, this blower ensures consistent air movement that reduces engine compartment temperatures and eliminates lingering gas fume odors. Rule's Part Number 240 is compatible with standard 4-inch flexible ductwork, making it suitable for both new builds and retrofits on gas or diesel vessels.