Fan filter grill usually used as a fan guard it provides a physical barrier over the fan component to prevent accidental contact with fingers0r 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. Advantage 1. The fan filter grills are made of Chrome Plated Iron with excellent pressure resistance and corrosion resistance; 2. It has pressure resistance and bending resistance increase the hardness of the fan filter not easy to break you can avoid dust accumulation as much as possible so as to keep the fan clean and extend its service life; 3. Durable and sturdy easy to install and clean. Instruction Easy 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. Notice Please check the size of your fan before purchasing.