Fan Guard 120mm Alphacool 10337 — black protective grille for 120 mm computer fans

The Alphacool Fan Guard 120mm (model 10337) is a black protective grille engineered to mount over standard 120 mm computer fans. It prevents accidental contact with fan blades and reduces the risk of cables or small debris entering the fan assembly while allowing unrestricted airflow for cooling components. The grille is a simple, low-profile solution that can be fitted to PC cases, fan assemblies and radiators where physical protection is required without significantly affecting cooling performance.

Advantages

This protective grille provides reliable physical protection for 120 mm fans while maintaining a compact and unobtrusive appearance. Its open design preserves airflow characteristics, and the robust construction helps prevent damage from fingers, loose cables or foreign objects. The black finish blends with typical PC interiors and is suitable for installations where a discreet protective solution is preferred.

Suitable for

• Protecting 120 mm case fans from accidental contact with fingers or cables
• Use on radiators and cooling assemblies to keep fins and blades clear of debris
• Retrofit applications where a simple grille is required to meet safety or cleanliness needs
• PC builds that require a low-profile, unobtrusive fan guard

When it may not be suitable

The Alphacool 120 mm fan guard is not intended to replace specialized dust filters or active fan-shrouding solutions; it does not provide fine particulate filtration. For builds that require high dust protection or acoustic dampening, additional filters or different accessories may be more appropriate. The grille is designed for standard 120 mm fans and may not fit non-standard or proprietary fan shapes and mounting arrangements.

Key specifications

• Size compatibility: designed for 120 mm computer fans
• Color: black finish
• Function: protective grille to prevent contact with fan blades and entry of larger debris
• Form factor: low-profile grille suitable for mounting over fans, radiators and fan assemblies

How to use

Align the Alphacool fan guard over the 120 mm fan so that its mounting holes match the fan or case threaded holes. Secure the grille using the same screws used for the fan or the case; ensure screws are tightened evenly to avoid bending the grille. Verify that the grille does not contact the fan blades and that the fan spins freely. For radiator installations, position the grille external to the radiator fins where it does not impede the connection of other components.

What to consider before purchase

• Confirm the fan or mounting location is a standard 120 mm size and that screw hole alignment is compatible
• Decide whether a simple protective grille meets your needs or if you require dust filtration or acoustic solutions
• Ensure adequate clearance inside the case or on the radiator so the grille will not interfere with cables or other components

Usage recommendations

Install the grille with even screw torque and check blade clearance after installation. Combine with a dust filter if fine particulate protection is needed. Periodically inspect and clean the grille to maintain unobstructed airflow and effective protection.