RAMFAN UB20 18 VDC
The RAMFAN UB20 18 VDC is a portable, battery-powered Milwaukee M18 extraction fan, designed to ventilate confined spaces and areas without a mains power supply. Compact, robust and capable of operating in either blow or extraction mode, it offers up to 2 hours of runtime. Detailed description
A mobile ventilation solution for demanding work environments
The RAMFAN UB20 18 VDC is a portable axial blower/exhauster designed for ventilation, fresh-air supply and stale-air extraction on jobsites, during maintenance operations and in confined spaces.
Powered by a Milwaukee M18 battery, it operates without a power cable or generator. It can therefore be deployed quickly in tanks, manholes, sewer networks, technical rooms and hard-to-reach areas.
Thanks to its integrated duct adapter, the unit can be used for both air supply and extraction with a 20 cm flexible duct.
Robust construction and materials
The RAMFAN UB20 18 VDC features a UV-resistant dual-wall polyethylene housing.
This robust construction is designed for demanding jobsite and maintenance conditions. The switch enclosure is also rated IP55 for protection against rain.
The unit includes several built-in safety protections:
- undervoltage protection;
- overcurrent limitation;
- reverse-polarity protection;
- thermal protection;
- motor-stall protection.
User comfort and ergonomics
With a weight of 8 kg, excluding the battery, and compact dimensions of 36 × 31 × 33 cm, the RAMFAN UB20 18 VDC is easy to transport and position.
Its cordless operation improves mobility between work areas and reduces the need for power cables on the ground.
The unit is controlled through a two-speed switch. The operator can select the ventilation level according to the application:
- Low mode, for continuous ventilation and extended battery runtime;
- High mode, for faster and more intensive air renewal.
Ventilation and air extraction
The blower can be used in two main configurations.
In blower mode, it supplies fresh air to a work area or confined space.
In exhauster mode, it removes stale air, fumes or dust to the outside.
When used with a Milwaukee M18 REDLITHIUM HD12.0 18 V, 12 Ah battery, the unit provides up to:
- 120 minutes of runtime in Low mode;
- 60 minutes of runtime in High mode.
The stated sound level is 68 dBA at 1 metre in Low mode and 74 dBA at 1 metre in High mode.
Face protection, goggles and visors
Not applicable
This product is a portable ventilation unit and does not include face protection, goggles or a visor.
Available accessories
The RAMFAN UB20 18 VDC can be used with the following accessories:
- 20 cm ECKO Flex duct, 4.6 m long;
- 20 cm ECKO Flex duct, 7.6 m long;
- duct carrying bag;
- Quick-Couple storage canister;
- Milwaukee M18 HD12.0 battery;
- Milwaukee M18 charger.
The Quick-Couple canister helps transport, store and protect the flexible duct.
| Manufacturer | Ramfan |
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Worldwide delivery
International delivery in compliance with international transport regulations (IATA, AMDG, ARD).
On demand "lithium" and "dangerous goods" regulated packaging.
Learn more about our worldwide shipping solutions.




