Protect your PCs components from harmful debris with the DEMCiflex 60mm Square Computer Dust Filter. Dust is one of the main causes for PC component failure. Having a filter on your fan grills greatly improves the airflow into your system and speeds up the dust cleaning process. Dust build up inside your computer case is by far the biggest cause of most electronic componens poor performance and ultimate failure as it inhibits the machine's ability to cool itself properly. DEMCiflex Computer and Electronics Dust filters use precision medical grade mesh to stop dust from entering the case and fits magnetically to the outside of your case. This makes it easy to fit and clean as there is no need for any tools, screws or glue.