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Acoustic & Electronics Mesh · IEC 60950 / IEC 62368-1 finger probe · Application guide

What Is Fan Guard & Finger Grille Used For?

A square black computer cooling fan with a round perforated metal finger guard grille screwed on top

Fan Guard & Finger Grille (IEC 60950 / IEC 62368-1 finger probe) is specified where the duty calls for keeping fingers and objects away from rotating fan blades in electronics, appliances and equipment while passing cooling air. The sections below cover the typical end-uses by industry, the mesh, micron and material decisions for each, installation practice, and the applications this product type is not suited to.

Typical Applications for Fan Guard & Finger Grille

Where Fan Guard & Finger Grille is specified and bought:

  • Electronics OEMs: guards on 40–140 mm cooling fans in power supplies and enclosures.
  • Appliance makers: guards in fan heaters, dehumidifiers and air purifiers.
  • Industrial control panels: filter-fan guards on cabinet ventilation.
  • Telecom & outdoor cabinets: corrosion-resistant fan guards.

How to Specify Fan Guard & Finger Grille for Your Application

  • Probe compliance: Hole size and standoff must pass the IEC finger probe for the product standard (e.g. IEC 62368-1).
  • Fan size & screw pitch: Match the fan frame and mounting hole spacing exactly.
  • Airflow: Perforated guards with high open area lose less airflow than wire guards of the same probe rating.
  • Standard: Quote IEC 60950 / IEC 62368-1 finger probe and the size designation from the table on the product page, plus any value you changed in the technical drawing.

Handling & Installation Practice

  • Mount the guard with the fan screws so it is earthed through the chassis when metal.
  • Check the guard does not touch the blades under vibration.

Common Selection Mistakes with Fan Guard & Finger Grille

  • Using a decorative grille that fails the finger-probe test.
  • Choosing a mounting pitch for the wrong fan size.

Where Fan Guard & Finger Grille Is Not the Right Choice

Not a dust filter; add a filter pad or mesh if dust must be stopped.

If This Construction Is Not the Right Fit

Closely related mesh types for the same duty — compare open area, aperture range and cleanability before you commit.

Technical Drawing

Customize the parameters below — every spec field is editable, and the drawing redraws to match the values you choose. Changing the size will snap the other fields to that size's standard values; you can then override any individual value.

Sends the selected values to the quote form below.

Request a Quote

Set the size and options in the drawing above, then send the exact configuration straight to this form.

Request a Quotation

Specification
Business Information

Dimensions & Specifications (IEC 60950 / IEC 62368-1 finger probe)

Fan sizeGrille diameter (mm)Hole diameter (mm)Dome height (mm)Mounting holesThickness (mm)
40 mm383.0040.8
80 mm764.0041.0
120 mm1165.0041.0
140 mm1365.0041.2

Frequently Asked Questions

What is Fan Guard & Finger Grille used for?

Keeping fingers and objects away from rotating fan blades in electronics, appliances and equipment while passing cooling air.

What is the finger probe test for fan guards?

A standardized test finger must not touch moving blades through the guard openings.

Does a fan guard reduce airflow?

A little; perforated guards with large open area cost only a few percent.

How do I choose a fan guard size?

By fan frame size and mounting hole spacing, e.g. 105 mm spacing for 120 mm fans.

Can I get a quote for Fan Guard & Finger Grille to my own drawing?

Yes. Set the size and any custom value in the technical drawing on the product page and send it with the quote form; we reply within one business day.