Why Choose the Finder 7F.31.8.120.2055 Outdoor Reverse Flow Filter Fan?
The Finder 7F.31.8.120.2055 is a compact outdoor reverse flow filter fan designed to extract warm air from industrial electrical cabinets, control panels and automation enclosures. Part of the Finder 7F Series, this Size 2 exhaust fan provides forced-air ventilation for electrical and electronic equipment where reliable thermal management and protection against environmental exposure are important.
Unlike conventional intake filter fans, the Finder 7F.31.8.120.2055 uses a reverse airflow arrangement to expel air from inside the enclosure. When paired with a suitably positioned filtered air inlet, it helps establish a controlled ventilation path that reduces heat accumulation around power supplies, relays, controllers and other electrical components. Its replaceable filter mat, compact housing and convenient mounting arrangement simplify installation and maintenance.
Operating from a nominal 120 V AC supply, the fan delivers an unimpeded airflow of 55 m³/h and a listed filtered airflow of 45.5 m³/h. With IP54 ingress protection, IK08 impact resistance and UL Type 3R outdoor suitability, it is a practical exhaust ventilation solution for compact industrial electrical enclosures.
Key Advantages
- Outdoor reverse flow filter fan designed for electrical cabinet exhaust ventilation.
- 55 m³/h unimpeded airflow helps remove accumulated heat from compact enclosures.
- 45.5 m³/h listed filtered airflow provides a useful reference for ventilation planning.
- 120 V AC supply for compatible industrial electrical installations.
- IP54 protection helps guard against harmful dust ingress and splashing water when correctly installed.
- IK08 impact resistance supports durability in industrial environments.
- UL Type 3R outdoor classification supports suitable weather-exposed installations.
- Replaceable filter mat enables straightforward routine servicing.
- Snap-in installation helps reduce panel assembly time.
- Compact 155 × 155 mm front dimensions suit smaller electrical enclosures.
- 57.2 mm installation depth helps preserve internal cabinet space.
- Ball-bearing motor supports dependable forced-air ventilation.
Key Features
- Finder 7F Series enclosure cooling and ventilation product.
- 7F.31 reverse flow configuration designed for outdoor exhaust ventilation.
- Size 2 filter fan for compact and medium-sized control enclosures.
- 120 V AC nominal operating voltage.
- AC motor operation for industrial electrical systems.
- 55 m³/h unimpeded airflow.
- 45.5 m³/h listed filtered airflow.
- 210 mA listed input current.
- 30 W listed input power.
- 42 dB(A) nominal acoustic noise level.
- IP54 ingress protection rating.
- IK08 mechanical impact protection.
- UL Type 3R / NEMA Type 3R outdoor enclosure classification.
- G3 synthetic fibre filter mat with replaceable construction.
- Flame-retardant plastic housing for electrical enclosure applications.
- Dark grey RAL 7000 finish.
- 155 × 155 mm front dimensions.
- 57.2 mm installation depth.
- Snap-in mounting for efficient cabinet installation.
- Ball-bearing fan motor.
- CE, UKCA and RoHS compliance.
Technical Specifications
- Manufacturer: Finder
- Series: 7F Series
- Manufacturer part number: 7F.31.8.120.2055
- Product type: Outdoor reverse flow filter fan
- Airflow direction: Reverse flow / exhaust
- Nominal supply voltage: 120 V AC
- Supply frequency: 50/60 Hz
- Unimpeded airflow: 55 m³/h
- Listed filtered airflow: 45.5 m³/h
- Listed input current: 210 mA
- Listed input power: 30 W
- Noise level: 42 dB(A)
- Fan size: Size 2
- Ingress protection: IP54
- Impact protection: IK08
- Outdoor enclosure classification: UL Type 3R / NEMA Type 3R
- Front height: 155 mm
- Front width: 155 mm
- Installation depth: 57.2 mm
- Mounting method: Snap-in enclosure wall mounting
- Bearing type: Ball bearing
- Electrical connection: Wire / terminal connection
- Filter type: Replaceable filter mat
- Filter classification: G3 according to EN 779
- Filter material: Synthetic fibre
- Housing material: Flame-retardant plastic
- Housing colour: Dark grey, RAL 7000
- Nominal service life at 40 °C: 50,000 hours
- Installation environment: Suitable indoor and outdoor electrical enclosures
- Compliance: CE, UKCA and RoHS
- Country of origin: Italy
Effective Exhaust Ventilation for Outdoor Electrical Cabinets
Electrical cabinets often contain heat-generating components such as programmable logic controllers, industrial power supplies, motor control equipment, contactors and communication devices. When these components operate continuously, internal enclosure temperatures can rise and affect equipment performance. The Finder 7F.31.8.120.2055 provides active exhaust ventilation to help remove this heat and maintain more suitable operating conditions.
The reverse flow design draws warm air from inside the cabinet and expels it to the surrounding environment. When used with an appropriately sized intake filter, this encourages cooler ambient air to enter the enclosure and circulate around installed components. The fan's 55 m³/h unimpeded airflow capacity makes it suitable for smaller cabinets where controlled ventilation is required without the physical size of a larger cooling fan.
For outdoor installations, the IP54, IK08 and Type 3R classifications are particularly relevant. These ratings support protection against specified dust, water and impact conditions when the fan is installed correctly. The weather-resistant housing and replaceable filter mat also support routine maintenance in industrial environments where airborne contamination and environmental exposure may affect ventilation equipment.
The 155 × 155 mm front dimensions and shallow 57.2 mm installation depth make the Finder 7F.31.8.120.2055 practical for cabinets with limited mounting space. Its snap-in arrangement simplifies mechanical installation, while the ball-bearing fan motor supports dependable operation.
When selecting an enclosure ventilation system, the required airflow should be calculated using the heat dissipated by the installed equipment, the maximum ambient temperature and the permissible internal temperature rise. Actual installed airflow may be lower than the free-flow rating because of filters, ventilation openings and system resistance. As an ambient-air ventilation product, the fan cannot cool the enclosure below the temperature of the incoming air.
Typical Applications
- Outdoor industrial electrical control cabinets.
- Compact PLC and automation control enclosures.
- Electrical distribution and monitoring panels.
- Industrial relay and contactor cabinets.
- Telecommunications and communications equipment enclosures.
- Renewable energy monitoring and control cabinets.
- Water treatment and pumping station control panels.
- Utility and infrastructure electrical enclosures.
- Industrial power supply cabinets.
- Small motor control and machinery panels.
- OEM equipment requiring compact exhaust ventilation.
- Electrical enclosures requiring filtered thermal management.
