Fan filter grill usually used as a fan guard, it provides a physical barrier over the fan component to prevent accidental contact with fingers or other objects. In addition, it can effectively prevent dust from entering your fan while maintaining optimal airflow. Widely used in computers, exhaust fans, radiators, generators, electric cabinets etc.SpecificationColor: GreyMaterial: PlasticOverall Size: 116x116mm/4.57x4.57inch (L*W)Parallel Hole Distance: 101mm/3.98inchDesign for 91mm Cooling FanPackage Content: 1 Pack Fan Filter Grill with 4 ScrewsAdvantage1. Louver design with sealing strips on the edges for better sealing effect, you can avoid dust accumulation as much as possible, so as to keep the fan clean and extend its service life;2. It has pressure resistance and bending resistance, not easy to break;3. Contains G3 polymer filter cotton, it has good waterproof performance, making the fan filter more durable;4. Durable and sturdy, easy to install and clean.InstructionEasy to install, just place it on the fan and secure the matching screws with a screwdriver. If the mesh is dirty, it can be washed with water or cleaned with a brush.NoticePlease check the size of your fan before purchasing.