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Two black matte 40mm fan guards with round struts and push-pin mounts

Noctua

Noctua NA-FG1-4 Sx2 40mm Fan Grills Set of 2 Black

SKU CH-3Q59-XV2BQ

Premium matte-black 40mm fan guards with tool-free push-pin mounts and 5mm offset for low turbulence

  • Premium matte-black guards shield 40mm fans from fingers and cables
  • Round struts with offset design keep airflow high and noise low
  • Tool-free push-pin mounts add 5mm offset for smoother, quieter intake
  • Set of two includes eight screws and eight push-pins for quick fitting
  • Suits PC builds, 3D printers and home ventilation projects alike

Premium 40mm Fan Protection

The Noctua NA-FG1-4 Sx2 is a set of two premium-grade matte-black fan grills designed for 40mm fans. They provide reliable protection against finger contact and cable intrusion in PCs, 3D printers, and home ventilation systems. The package includes eight fan screws and eight tool-free push-pin mounts for flexible installation. Builders seeking a simple safety upgrade for small-form-factor cooling will appreciate the straightforward mounting options.

Offset Design for Airflow Headroom

Round struts and an offset structure minimise airflow restriction while maintaining strong physical guarding. The push-pin system adds a further 5mm offset that reduces influx turbulence, helping the fan sustain smoother operation and better acoustic performance. In tight chassis where every millimetre of static pressure matters, this design preserves more headroom than flat-profile guards. Users who need maximum unrestricted flow for high-impedance radiators may still prefer running without any grill.

Tool-Free Mounting Practical Limits

The push-pin mechanism allows quick installation or removal even when fans are already secured in a case, saving time during maintenance. Fixed screw holes remain available for permanent mounts where vibration resistance is critical. The grills fit standard 40mm fan frames only; they cannot adapt to larger or non-standard mounting patterns. Enthusiasts building custom ducting or non-PC enclosures should verify hole spacing before committing to the push-pin method.

Highlights

  • Premium matte-black guards shield 40mm fans from fingers and cables
  • Round struts with offset design keep airflow high and noise low
  • Tool-free push-pin mounts add 5mm offset for smoother, quieter intake
  • Set of two includes eight screws and eight push-pins for quick fitting
  • Suits PC builds, 3D printers and home ventilation projects alike

Specifications

No published specifications for this item yet.

Questions about this item

Will these 40mm grills fit the 40mm fans I already have installed in my case?

Yes, they are designed for 40mm fans and the push-pin system works even if the fans are already mounted in the system.

How can I check the push-pin offset is reducing turbulence after I install them?

Listen for smoother, quieter fan operation; the 5mm offset created by the push-pins is designed to lower influx turbulence and improve running smoothness.

Does the set include both the screws and the tool-free push-pins for mounting?

The set of two includes two grills, eight fan screws and eight tool-free push-pin mounts for either installation method.

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