Extractor fan FR-BS / FR-BS EC
FR-BS series industrial exhaust fans are professional devices designed for effective air circulation in halls and large facilities. They are suitable for large-scale industrial and warehouse facilities, where rapid and failure-free air exchange is the basis for process continuity. Two drive variants are available within the series: a traditional AC motor and an energy-efficient EC motor with stepless speed control.
Choose an FR-BS fan variant
Within the series, two variants are available, optimized for specific needs and investment budgets — from traditional, robust AC models to modern EC solutions focused on maximum efficiency.
FR-BS
A classic and reliable solution for standard air exchange systems. AC induction motors guarantee even flow and exceptional durability thanks to a simple, proven design.
up to 20,000 m³/h
52 to 75 dB
55 W to 1,200 W
FR-BS EC
A variant with an innovative EC motor, enabling energy consumption optimization through stepless speed control in the range of 0 to 100%. Recommended for continuous operation installations and integration with building automation systems.
up to 21,480 m³/h
68 to 86 dB
105 W to 2,770 W
FR-BS EC-EE
Wall-mounted supply or exhaust fan in a square housing with an energy-efficient EC motor. For production halls, warehouses, and workshops. ErP 2026 compliant.
1,710 to 21,000 m³/h
98 W to 1,390 W
59 to 78 dB
Do you have any questions?
Need technical support? Or would you like to ask about commercial terms? Call us or write to us!
Why choose our FR-BS exhaust fans?
Ideal for large-scale facilities, where rapid and failure-free air exchange is the basis for the continuity of production and warehouse processes.
Maximum airflow efficiency up to 21,480 m³/h for the highest models, allowing support for even the largest halls and logistics centers.
Choice of proven induction AC motors or energy-efficient EC motors, tailored to project priorities.
Long product life thanks to a durable, square, powder-coated steel casing that protects against corrosion and mechanical damage.
High motor protection rating of IP54, guaranteeing resistance in harsh industrial conditions (dust, moisture).
FR-BS fan: overview of technical parameters
| Parameter | FR-BS | FR-BS EC |
|---|---|---|
| Motor type | Induction AC | Energy-saving EC |
| Max. airflow | up to 20,000 m³/h | up to 21,480 m³/h |
| Motor power range | 55 W to 1,200 W | 105 W to 2,770 W |
| Noise level | 52 to 75 dB | 68 to 86 dB |
| Motor IP rating | IP54 | IP54 |
| Casing material | Powder-coated steel | Powder-coated steel |
| Blade material | Powder-coated steel | Polypropylene |
| Speed control |
1 speed or rotation speed regulator |
Stepless 0 to 100% |
Which variant to choose?
FR-BS (AC motor)
An optimal choice when the initial purchase cost plays a key role, the fan will operate in an “on/off” system at constant speeds, and the facility does not have advanced digital HVAC automation.
FR-BS EC (EC motor)
Low operating costs and precise control. Recommended when you want to reduce electricity bills, need stepless speed regulation, or plan integration with a building automation system (BMS).
What do you gain with the FR-BS series fans?
Simple and trouble-free installation — square mounting plate for wall openings
Installers value our fans for their convenience. The fan housing is equipped with a special square mounting plate, which enables quick and direct installation into a dedicated wall opening. In practice, this shortens installation time and simplifies subsequent maintenance work.
System protection thanks to dedicated accessories — gravity shutter protecting the exhaust system
For both AC and EC models, a dedicated gravity shutter is available for installation at the duct ends. It protects the facility against the backflow of exhausted air, heat loss caused by wind, and rainfall, sealing the system when the fan is not operating.
Budget protection — long-term savings regardless of the chosen variant
An investment in the FR-BS series is a guarantee of long-term savings, regardless of the chosen variant. Classic AC models offer an excellent quality-to-price ratio and reliable operation, while EC versions allow you to lower electricity bills thanks to stepless power control. In both cases, the steel construction with a high motor protection rating minimizes the risk of mechanical failures.
FAQ
When selecting industrial fans for large-volume facilities, appropriate airflow capacity and equipment reliability are crucial. Our wall-mounted exhaust fan from the FR-BS series reaches an airflow of up to 20,000 m³/h, and the version equipped with an EC motor delivers up to 21,480 m³/h. Such high performance of these high-power models guarantees effective air exchange tailored to strict technical requirements. The robust steel housing ensures complete safety and continuity of production processes.
FR-BS EC models are equipped with brushless DC motors, which increases their efficiency and extends their service life. They provide a very wide range of stepless speed control (0-100%). This flexibility translates into lower electricity consumption when using the fan at lower speeds, as well as higher efficiency compared to AC motors. Superior energy efficiency also means greater investment security, significantly reducing system maintenance costs.
Choose the EC motor series if:
You want to lower electricity bills in the facility on an annual basis.
You need the flexibility provided by stepless speed control.
A solution with an AC induction motor will be optimal for you if:
You are looking for a budget-friendly solution where the initial purchase cost plays a key role.
Your fan will operate in an "on/off" system at a fixed speed and will not require precise adjustment of the exhaust force.
There is no advanced, digital HVAC automation in the facility.
The choice is determined by the architecture and specifics of the installation. Wall-mounted industrial exhaust fans in a square frame (FR-BS) are mounted in a dedicated opening in the building partition.
On the other hand, roof fans (e.g., the STORM series) are utilized where the design of the hall necessitates a vertical air discharge or where there is a lack of space on the external facade. Both series guarantee uncompromised performance for demanding industries.
To ensure that mechanical ventilation operates flawlessly, we recommend equipping the FR-BS series industrial exhaust fan with a dedicated GS gravity shutter, protecting the external side of the exhaust opening on the facade. It prevents cold air backflow and safeguards against rain, which enhances the safety and service life of the entire system. Additionally, precise HMI EC controllers for brushless models allow for real-time monitoring of the unit's output. Maximum performance and safe operation are the foundation of Reventon solutions.
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