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The Jabsco 4" Flexmount Blower is a powerful, reliable 12V marine ventilation blower designed to deliver high airflow for effective removal of heat, fumes, moisture, and odors from enclosed spaces. With an impressive 250 CFM airflow rating, this blower is ideal for engine compartments, bilges, battery lockers, and cabin ventilation on boats, RVs, and utility vehicles.
Engineered for durability and quiet operation, this blower provides consistent performance in demanding marine environments.
Rated at 250 cubic feet per minute, the blower delivers strong airflow to quickly ventilate confined areas. It is well-suited for larger compartments or applications requiring faster air exchange to improve safety and comfort onboard.
The flexmount design allows the blower to be installed in tight or irregular spaces and connected easily to standard 4-inch ventilation hose. This flexibility reduces vibration and simplifies routing in complex installations.
Designed for 12-volt DC systems, this blower integrates seamlessly with most marine and RV electrical systems, making it ideal for mobile applications without shore power.
Built by Jabsco, this blower features corrosion-resistant materials, a sealed motor, and rugged housing designed to withstand moisture, vibration, and harsh marine conditions. It is engineered for long service life and dependable operation.
(1) Jabsco 4" Flexmount Blower: 12V DC motor with a high-impact plastic housing.
(1) Universal "Flexmount" Bracket: Pre-installed, allows for mounting on any flat surface or bulkhead.
(1) Wiring Pigtail: For connection to the vessel's 12V electrical system.
(1) Installation Guide: Including electrical requirements and mounting templates.
Moving 250 CFM , this blower is designed to overcome the resistance of long ducting runs. It is significantly more powerful than standard 3-inch blowers, making it the preferred choice for larger engine rooms or high-heat environments.
The mounting bracket is separate from the blower body, allowing you to:
Mount the bracket to a floor, ceiling, or bulkhead.
Rotate the blower discharge port to the exact angle needed to align with your hoses.
This prevents "kinking" of the 4-inch ducting, which is the leading cause of reduced airflow.
Ignition Protected: Meets USCG 183.410 and ISO 8846 Marine standards. It is safe for use in gasoline engine compartments.
Corrosion Resistant: Built with a nickel-plated motor and a tough, reinforced plastic housing to survive the salt-air environment of a bilge.
| Feature | Details |
| Model Number | 35440-0000 |
| Airflow | 250 CFM ($7.0 \text{ m}^3/\text{min}$) |
| Voltage | 12V DC |
| Amp Draw | 11.0 Amps |
| Fuse Size | 15.0 Amp |
| Ducting Size | 4" (102mm) |
| Weight | Approx. 5.0 lbs ($2.3 \text{ kg}$) |
"To ensure maximum airflow, keep the 4-inch intake hose as straight as possible. If you are using this blower for engine room ventilation, it is best practice to have the intake located in the lower third of the bilge to exhaust heavier-than-air fuel vapors, while the blower itself should be mounted as high as possible to protect it from bilge water."
Engine compartment ventilation
Bilge and battery compartment airflow
Cabin and locker ventilation
RV and camper ventilation systems
Utility and enclosed equipment spaces
Jabsco is a leader in marine ventilation and fluid management, trusted worldwide for quality and reliability. The 4" 250 CFM Flexmount Blower offers powerful airflow, easy installation, and long-lasting performance for safer, better-ventilated vessels.
Improve onboard safety and comfort with the Jabsco 4" 250 CFM Flexmount Blower – 12V – 35440-0000, a dependable ventilation solution built for marine environments.
WARNING: This product can expose you to chemicals including NICKEL (METALLIC) which is known to the State of California to cause cancer. For more information go to P65Warnings.ca.gov.
Manufacturer : Jabsco
Manufacturer Part No : 35440-0000
UPC : 671880030250
Ships within 48 hours · Estimated delivery Jun 22 - Jun 27
US$40
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