Feature: 1. MULTIFUNCTIONAL: Premium fan filter grills with multifunctional use, suitable for your desktop computer to avoid dust, prevent cables from being cut by the fan, protect the safety of your fingers and so on. 2. SPECIAL DESIGN: PC fan dust filter with ultra fine holes protects your device from overheating and minimizes noise to enhance your experience, also effectively extends fan life. 3. EASY TO INSTALL: Computer fan filter grills keep and protect your computer and electronic components clean, offers 2 mounting options with magnetic adsorption function or can be mounted with screws (not included). 4. EASY MAINTENANCE: PVC fan dust filter, reduces the cleaning time of the fan and components, prolongs its service life, even if the filter is dirty, it is very easy to clean and replace. 5. MULTIPURPOSE: This PVC mesh fan dust filter has 140 x 140mm size, not only used for computer cases, but also can be used for chicken coop vents, meet your different use needs. Specification: Item Type: PC Fan Dust Filter Material: PVC Size: Approx. 140 x 140mm / 5.51 x 5.51in Installation Hole Distance: Approx. 125 x 125mm / 4.92 x 4.92in Magnetic Adsorption Function: Yes Installation Method: Magnetic Adsorption, Screw Installation (Screws Not Included), Two Installation Methods Application: PC Case Power Supply, Fan Vent Gross Weight: Approx. 85g / 3oz. Package List: 4 x PC Fan Dust Filter Note: Manual measurement, please allow some errors.