Two-speed inline axial fan (Duo version), designed for intake or extraction ventilation through round ducts. The cylindrical format allows direct insertion into the duct, making it suitable for compact air-exchange systems in indoor environments.
Key features
- Device type: Inline axial fan
- Version: Duo (two-speed motor)
- Duct diameter: Ø125 mm
- Airflow (min/max): 145 / 197 m³/h
- Power consumption (min/max): 10 / 13 W
- Noise level (min/max): 29 / 32 dB(A) (at 3 m, free field)
Overview
What it is for
It is designed for air exchange in low-resistance ducted systems, with continuous or periodic operation. In indoor cultivation it can be integrated into a ventilation circuit to introduce fresh replacement air or to extract air from the environment, depending on the installation configuration.
Who it is for
- Indoor setups with Ø125 mm ducting
- Compact growboxes/growrooms where simple inline ventilation is required
- Users who want to manage two ventilation levels (low/high) via the Duo version
What makes it different
- Duo version with two speeds
- Plastic structure and internal geometry designed to reduce turbulence and noise in ducted applications
- Can be used for both extraction and intake, depending on the installation direction
How to use
Installation
- Check that the duct diameter is Ø125 mm.
- Install the fan inline in the duct run, observing the airflow direction indicated by the manufacturer.
- If connected to flexible ducting, secure it with suitable clamps; avoid compression or deformation of the body.
- Connect the power supply in accordance with regulations and the manual instructions.
Tip: in a growbox, extraction is typically positioned high up; active intake, if used, is usually positioned low down to promote regular air exchange.
Adjustment
- The version Duo dispone of two speeds operating.
- For speed management with accessories/external controllers, follow the manufacturer's instructions and verify control compatibility with the Duo version.
Maintenance
- Disconnect the unit from the mains before carrying out any work.
- Clean surfaces, grilles and impeller periodically to remove dust and residues.
- Check the reliability of the electrical connections and make sure the ducts are not obstructed.
Warnings
- Do not obstruct the air inlet/outlet sections.
- In vertical installation, protect the unit from infiltration and condensation.
- Do not install with the air discharge pointing directly upward.
- Do not use in hazardous/explosive environments or with air containing dust, sticky substances or fibrous matter.
Technical specifications
- Type: Inline axial fan
- Series: Quietline
- Version: Duo (two speeds)
- Duct diameter: 125 mm
- Power supply: 220–240 V
- Frequency: 50 Hz
- Maximum airflow: 197 m³/h
- Airflow (min): 145 m³/h
- Power consumption (min/max): 10 / 13 W
- Current (min/max): 0.065 / 0.085 A
- Speed (min/max): 1950 / 2250 rpm
- Sound pressure (min/max): 29 / 32 dB(A) (at 3 m, free field)
- Protection rating: IPX4
- Operating ambient temperature: from +1 °C a +40 °C
Brand
VENTS develops domestic and service ventilation solutions. The Quietline series includes inline axial fans for extraction or intake ventilation, with versions and modifications designed for different control and noise-level requirements.
FAQ & usage tips
What does “Duo” mean?
It indicates a two-speed motor modification, useful for alternating between a lighter air exchange rate and stronger ventilation, depending on setup needs.
Can I use it for extraction or intake?
Yes. The function depends on the installation direction in the ducted system.
How often should maintenance be carried out?
Periodic maintenance includes dust/dirt cleaning and checking the connections. The minimum frequency indicated is at least once every 6 months, depending on operating conditions.