Johnson Pump 3" In-Line Blower - 158CFM - 12V

The Johnson Pump 3" In-Line Blower is a compact 158 CFM ventilation unit designed for confined-space air circulation in marine, RV, and industrial environments. Built from corrosion-resistant ABS plastic with a sealed 12V electric motor, this in-line blower handles bilge ventilation, engine compartment air management, and galley or head exhaust with quiet, efficient operation. The five-blade design prioritizes low noise output without sacrificing airflow capacity—a critical advantage when operating in close quarters or during extended deployments.

Specifications matter in confined-space ventilation: 158 CFM moves adequate volume through 3-inch ducting while remaining within the power envelope of standard 12V systems found in marine and off-grid applications. The dual 3-inch inlet and outlet ports accept standard marine duct fittings, simplifying integration into existing or new installations. Mounting feet allow secure fastening to any flat surface, and the compact footprint (8 x 6 x 11 inches) fits tight engine bays and bilge spaces without requiring structural modification. Premium electrical connections and sealed motor construction ensure years of reliable operation in high-moisture environments where salt air and humidity accelerate corrosion of lesser equipment.

This blower suits vessel owners, RV operators, and professionals managing ventilation in spaces where air stagnation creates safety or comfort concerns. It's especially valuable in conditions where passive ventilation fails—engine compartments under load, sealed living quarters, and systems requiring continuous or on-demand air movement. The 12V configuration integrates with marine electrical systems, auxiliary power units, and portable battery setups common in tactical or remote operational settings.

Johnson Pump specializes in compact marine-grade pumps and blowers; this model is engineered to the standards expected in saltwater and harsh-weather applications. The 158 CFM output represents a middle ground—sufficient for small to mid-sized bilge or compartment ventilation without the current draw or noise of larger units. For operators and technicians selecting ventilation equipment, Johnson's focus on corrosion resistance and sealed design makes this a dependable choice for long-service-life deployments.