40mm 4cm Fan Guard Grill PC Case Fan Protector - Metal Cooling

The 40mm fan guard is a metal wire grill that mounts directly over a 40 × 40 mm PC case or 3D printer fan, protecting blades from contact while keeping airflow open and unrestricted.

This 40mm fan guard slots over standard 40 × 40 mm fans and replaces overly restrictive solid-stamped stock grilles. The open wire mesh design lets air flow freely compared to punched-plate covers, making it ideal for case mods, blowhole modifications, and any build where finger safety and clean airflow both matter. In addition, the silver-tone metal construction is durable and matches most standard case interiors.

Key Features of the 40mm Fan Guard

• Fits standard 40 × 40 mm fans — compatible with PC cases, 3D printers, and industrial enclosures
• Guard wire diameter: 35mm — sized to protect the blade area without blocking mounting holes
• Open wire mesh construction — less restrictive than solid stamped grilles
• Metal build, silver-tone finish — durable and rust-resistant
• Lightweight at 9g — adds no meaningful load to case panels or 3D printer frames
• Protects fan blades and prevents fingers or cables from contacting spinning blades
• Drop-in replacement for restrictive stock case fan grilles

Use Cases

• PC case builds — protect 40mm intake or exhaust fans from cable snagging
• Case mods and blowhole installations where a clean, open grill is needed
• 3D printer enclosures — guard enclosure panel or control box fans
• Industrial or DIY enclosures requiring a standard 40mm fan safety guard

Works Well With

• 40–50–80–120mm Dustproof Fan Case Cover — adds a foam dust filter behind the guard to keep debris out of your fans

Project Ideas & Tutorials

• How to Install Case Fans into a Desktop PC — YouTube — a step-by-step video guide to fitting and securing fans and guards in a PC case
• The Ultimate Guide to Installing a Fan Grill on Your Computer — covers sizing, alignment, and screw types for fitting metal fan grills to standard fan openings

Package Contents

• 1 × 40mm metal fan guard