SEAFLO 24V 320CFM 4in Flex Mount Bilge Blower Marine Ventilation
SEAFLO 24V 320CFM 4in Flex Mount Bilge Blower Marine Ventilation
High-volume ventilation for 24V vessels
The SEAFLO SFBB2-320-02 is a 24V DC flex-mount centrifugal bilge blower rated at 320 CFM (approximately 550 m³/h). It is designed to move air through 4-inch marine ducting in engine compartments, bilges, galleys, heads and other enclosed boat spaces.
Its high-output centrifugal design suits larger ventilation runs where the installed duct resistance remains within the blower's capability. Correct ventilation design is essential on petrol-powered boats and in compartments containing fuel vapour.
Key Features
- ✔ High-volume 320 CFM / 550 m³/h nominal airflow.
- ✔ Flex-mount body for connection into 4-inch ventilation ducting.
- ✔ Sealed front and rear motor-shaft areas improve moisture protection.
- ✔ Corrosion-resistant white ABS housing for marine environments.
- ✔ Ignition-protected motor construction.
- ✔ Low-current 24V design compared with the corresponding 12V version.
- ✔ CE conformity referenced to EN 50014-1 and EN 61000-3-3.
Technical Specifications
| Manufacturer model | SFBB2-320-02 |
| Supply voltage | 24V DC |
| Blower type | Centrifugal flex-mount ventilation blower |
| Nominal airflow | 320 CFM / approximately 550 m³/h |
| Duct size | 4 in / approximately 102 mm |
| Maximum current draw | 6.0 A |
| Recommended fuse | 10 A |
| Housing | Corrosion-resistant ABS |
| Ignition protection | Yes |
| Approximate dimensions | 298 × 160 × 184 mm |
| Approximate unit weight | 2.14 kg |
Boat compatibility and installation checks
- For 24V DC boats only; do not connect directly to a 12V supply.
- Suitable for appropriately designed ventilation systems on motorboats, yachts, fishing craft and workboats using 4-inch ducting.
- Confirm airflow direction, duct diameter, mounting space and electrical load before replacing another blower.
- Keep duct runs short and smooth, avoid crushed hose and sharp bends, and place inlet/outlet openings to prevent recirculation.
- Use marine-grade cable, the specified fuse and a switch rated for the starting and running current.
- Ignition protection does not replace compliance with the boat builder's ventilation layout or applicable safety regulations.
- Package: one flex-mount blower. Ducting, grilles, switch, fuse and mounting consumables are separate.
Questions & Answers
Can it be used on a 12V boat?
No. This listing is the 24V model; use the corresponding 12V blower.
Does 320 CFM represent installed airflow?
It is the nominal rating. Real airflow decreases with duct length, bends, restrictions and grilles.
Is it suitable for an engine compartment?
Yes when installed as part of a correctly designed marine ventilation system and operated according to the vessel requirements.
Does the package include the 4-inch duct?
No. The listing is for the blower; ducting and external fittings are installation items.
Note: Please verify voltage, capacity and fitting sizes against your boat before ordering. For technical support, contact us via 4boats.co.uk.
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