Why Choose the Finder 7F.21.8.230.4400 Reverse Flow Filter Fan?
The Finder 7F.21.8.230.4400 is a high-capacity 230 V AC reverse flow filter fan designed to extract warm air from industrial electrical cabinets, automation panels and machinery control enclosures. Part of the Finder Series 7F enclosure ventilation range, this Size 4 fan provides powered exhaust ventilation to help maintain suitable operating temperatures for electrical and electronic equipment.
With a nominal free-flow air volume of 400 m³/h at 50 Hz and 445 m³/h at 60 Hz, the Finder 7F.21.8.230.4400 delivers substantial airflow for applications with demanding thermal management requirements. Its reverse flow configuration actively draws warm air from inside the enclosure and discharges it through the fan assembly, making it particularly useful for installations where heat accumulates towards the upper section of a control cabinet.
The fan operates from a 230 V AC, 50/60 Hz supply and features a Size 4 housing measuring 255 × 255 mm, a replaceable G3 synthetic-fibre filter mat and IP54 protection when correctly installed. Its flame-retardant housing, convenient mounting arrangement and industrial construction make it suitable for control panels, electrical distribution assemblies and automated machinery.
Key Advantages
- High-capacity reverse flow ventilation actively extracts warm air from industrial electrical enclosures.
- 400 m³/h free-flow air volume at 50 Hz supports demanding cabinet cooling requirements.
- 445 m³/h free-flow air volume at 60 Hz provides additional ventilation capacity.
- 230 V AC nominal supply suits compatible industrial electrical installations.
- Size 4 enclosure mounting format combines high airflow with practical installation dimensions.
- IP54 protection rating helps protect the enclosure against dust and water ingress when correctly installed.
- G3 synthetic-fibre filter mat helps reduce airborne particulate contamination.
- Replaceable filtration media simplifies maintenance and supports continued airflow performance.
- 50,000-hour fan lifetime rating at 40 °C supports long-term industrial operation.
- Flame-retardant plastic housing provides suitable construction for electrical enclosure applications.
- Snap-in mounting with supplementary screw fixing supports secure cabinet installation.
- Compatible with appropriately sized Finder Series 7F passive ventilation components.
Key Features
- Finder Series 7F industrial enclosure filter fan.
- Type 7F.21 reverse flow configuration.
- Size 4 high-capacity ventilation assembly.
- 230 V AC nominal operating voltage.
- 50/60 Hz supply frequency.
- 400 m³/h free-flow air volume at 50 Hz.
- 445 m³/h free-flow air volume at 60 Hz.
- 270 m³/h airflow at 50 Hz with a compatible exhaust filter installed.
- 300 m³/h airflow at 60 Hz with a compatible exhaust filter installed.
- 69 W rated power consumption at 50 Hz.
- 112 W rated power consumption at 60 Hz.
- 72 dB(A) nominal noise level.
- 50,000-hour lifetime rating at 40 °C.
- G3 filtration classification according to EN 779.
- Replaceable synthetic-fibre filter mat with progressive construction.
- Self-extinguishing plastic housing meeting UL94 V-0.
- IP54 enclosure protection according to EN 60529.
- NEMA Type 12 enclosure protection classification.
- Push-in electrical terminals for convenient wiring.
- Snap-in enclosure mounting with supplementary screw fixing recommended for high-airflow reverse flow installations.
- Designed for indoor industrial electrical cabinet ventilation.
Technical Specifications
- Manufacturer: Finder
- Series: 7F
- Type: 7F.21
- Manufacturer part number: 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
- Number of fans: 1
- Nominal supply voltage: 230 V AC
- Operating voltage range: 184–253 V AC
- Supply frequency: 50/60 Hz
- Free-flow air volume at 50 Hz: 400 m³/h
- Free-flow air volume at 60 Hz: 445 m³/h
- Air volume with exhaust filter at 50 Hz: 270 m³/h
- Air volume with exhaust filter at 60 Hz: 300 m³/h
- Rated power consumption at 50 Hz: 69 W
- Rated power consumption at 60 Hz: 112 W
- Current consumption at 50 Hz: 0.30 A
- Current consumption at 60 Hz: 0.49 A
- Noise level: 72 dB(A)
- Fan lifetime at 40 °C: 50,000 hours
- Filter classification: G3 according to EN 779
- Filter efficiency: 80–90% under the referenced G3 classification
- Filter material: Synthetic fibre with progressive construction
- Filter material temperature resistance: Up to +100 °C
- Filter material flammability: Self-extinguishing, Class F1 according to DIN 53438
- Housing material: Self-extinguishing plastic
- Housing flammability classification: UL94 V-0
- Housing colour: Light grey, RAL 7035
- Overall dimensions (W × H × D): 255 × 255 × 144 mm
- Enclosure cut-out: 223 × 223 mm nominal
- Mounting: Snap-in enclosure mounting with provision for screw fixing
- Electrical connections: Push-in terminals
- Conductor cross-section: 0.7–2.5 mm²
- Ambient operating temperature: −10 to +70 °C
- Protection rating: IP54 according to EN 60529
- NEMA enclosure rating: Type 12
- Compatible ventilation accessories: Finder Series 7F Size 4 exhaust filters
Reliable High-Capacity Reverse Flow Cooling for Industrial Cabinets
Electrical control cabinets containing power supplies, motor control equipment, electronic controllers and industrial automation devices can generate substantial heat during operation. The Finder 7F.21.8.230.4400 provides powered reverse flow ventilation, actively drawing warm air from the enclosure and discharging it through the fan assembly. With a nominal free-flow capacity of 400 m³/h at 50 Hz and 445 m³/h at 60 Hz, it supports effective heat removal when correctly selected for the enclosure's thermal load.
The fan incorporates a replaceable G3 synthetic-fibre filter mat and a flame-retardant enclosure-mounted housing to help manage airborne contamination. Its IP54 protection rating and 50,000-hour lifetime rating at 40 °C support industrial ventilation requirements. Actual installed airflow depends on the cabinet design, inlet and outlet arrangements, filter condition and overall system resistance. For this high-airflow reverse flow model, supplementary screw fixing is recommended to ensure secure installation, particularly where vibration or mechanical stress may occur.
Typical Applications
- Industrial electrical control cabinets requiring high-capacity exhaust ventilation.
- PLC and industrial automation control panels.
- Electrical distribution and switchgear enclosures.
- Motor control and industrial machinery cabinets.
- Manufacturing and automated production line electrical equipment.
- Power supply and electronic control enclosures.
- Process control and industrial instrumentation cabinets.
- Packaging, conveying and materials handling machinery.
- OEM electrical equipment requiring filtered forced-air cooling.
- Industrial enclosure ventilation systems using compatible Finder Series 7F components.
