Why Choose the Finder 7F.21.8.230.4400.0 Reverse Flow Filter Fan?
The Finder 7F.21.8.230.4400.0 is a high-capacity 230 V AC reverse flow filter fan with a distinctive black housing, designed for powered exhaust ventilation in industrial electrical cabinets, automation panels and machinery control enclosures. Part of the Finder Series 7F ventilation range, this Size 4 fan provides an effective solution for removing warm air from enclosures containing heat-generating electrical and electronic equipment.
With a nominal free-flow air volume of 400 m³/h at 50 Hz, the Finder 7F.21.8.230.4400.0 is suited to demanding industrial ventilation applications. Its reverse airflow configuration draws warm air from inside the enclosure and expels it through the fan assembly, helping maintain suitable internal operating temperatures when used with correctly sized ventilation openings.
The fan operates from a 230 V AC, 50/60 Hz supply and features a Size 4 enclosure mounting format, replaceable filtration media and a protective louvred housing. The black finish provides an alternative to the standard grey version, making this model particularly suitable for dark-coloured electrical cabinets, machinery and industrial equipment installations.
Key Advantages
- High-capacity reverse flow ventilation actively extracts warm air from industrial electrical enclosures.
- 400 m³/h nominal free-flow air volume provides substantial ventilation capacity at 50 Hz.
- 230 V AC operation suits compatible industrial electrical installations.
- Black housing finish complements dark-coloured electrical cabinets and machinery.
- Size 4 configuration provides a practical format for higher-airflow enclosure cooling.
- Powered exhaust operation helps reduce heat accumulation inside electrical cabinets.
- Replaceable filter mat supports straightforward servicing and maintenance.
- Louvred cover design provides a protected ventilation opening.
- Industrial enclosure construction supports demanding control panel applications.
- Compatible with Finder Series 7F ventilation accessories for coordinated enclosure airflow management.
- Panel-mounted installation allows integration into electrical cabinet walls or doors.
- Suitable for automation systems, electrical distribution equipment and industrial machinery.
Key Features
- Finder Series 7F industrial enclosure ventilation system.
- Type 7F.21 reverse flow filter fan.
- Complete manufacturer reference 7F.21.8.230.4400.0.
- Black housing version.
- Size 4 high-capacity ventilation assembly.
- 230 V AC nominal operating voltage.
- 50/60 Hz supply frequency.
- 400 m³/h nominal free-flow air volume at 50 Hz.
- Reverse airflow for powered extraction of warm enclosure air.
- Designed for industrial electrical cabinets and control enclosures.
- Replaceable filtration media.
- Louvred front cover for filtered ventilation.
- Enclosure-mounted fan assembly.
- Suitable for installation with a compatible passive ventilation opening.
- Supports forced-air thermal management of electrical equipment.
- Designed for indoor industrial enclosure applications.
Technical Specifications
- Manufacturer: Finder
- Series: 7F
- Type: 7F.21
- Manufacturer part number: 7F.21.8.230.4400.0
- Base model: 7F.21.8.230.4400
- Product type: Reverse flow filter fan
- Ventilation function: Powered exhaust ventilation
- Installation environment: Indoor electrical enclosures
- Fan size: Size 4
- Housing colour: Black
- Nominal supply voltage: 230 V AC
- Supply frequency: 50/60 Hz
- Nominal free-flow air volume at 50 Hz: 400 m³/h
- Nominal free-flow air volume at 60 Hz: 445 m³/h
- Air volume with compatible exhaust filter at 50 Hz: 270 m³/h
- Air volume with compatible exhaust filter at 60 Hz: 300 m³/h
- Rated power consumption at 50 Hz: 69 W
- Rated power consumption at 60 Hz: 112 W
- Nominal current consumption at 50 Hz: 0.30 A
- Nominal current consumption at 60 Hz: 0.49 A
- Filter element: Replaceable synthetic-fibre filter mat
- Filter classification: G3 according to EN 779
- Housing construction: Industrial plastic with louvred cover
- Overall dimensions (W × H × D): Approximately 255 × 255 × 144 mm
- Nominal enclosure cut-out: 223 × 223 mm
- Mounting: Electrical enclosure panel mounting
- Protection rating: IP54 when correctly installed
- Enclosure classification: NEMA Type 12
- Compatible ventilation accessories: Finder Series 7F Size 4 exhaust filters
- Maintenance: Periodic inspection and replacement of filter media
Reliable High-Capacity Reverse Flow Cooling for Industrial Cabinets
Industrial electrical cabinets often contain equipment that generates heat during normal operation, including motor controllers, power supplies, contactors, electronic control modules and automation devices. The Finder 7F.21.8.230.4400.0 provides powered reverse flow ventilation to extract warm air from these enclosures, helping reduce internal temperature build-up. Its 400 m³/h nominal free-flow capacity at 50 Hz makes it suitable for ventilation systems where substantial airflow is required to manage the enclosure's thermal load.
The black Size 4 housing provides a practical alternative to conventional grey ventilation components while retaining the functional characteristics of the corresponding Series 7F reverse flow fan. Replaceable filtration media supports routine maintenance, and the louvred cover provides a protected ventilation opening. Actual cooling performance depends on enclosure dimensions, heat dissipation, filter condition, ventilation openings and airflow resistance. Correct sizing and installation are essential for reliable long-term operation.
Typical Applications
- Industrial electrical control cabinets requiring high-capacity exhaust ventilation.
- Black or dark-coloured industrial electrical enclosures.
- PLC and automation control panels.
- Electrical distribution and switchgear cabinets.
- Industrial machinery and motor control equipment.
- Manufacturing and automated production line electrical panels.
- Power supply and electronic control enclosures.
- Process control and industrial instrumentation cabinets.
- OEM machinery requiring filtered forced-air cooling.
- Industrial enclosure ventilation systems using compatible Finder Series 7F components.
