However, do NOT forget to check those filters and clean them as necessary. If they get clogged with dust and no longer pass air, the fans will pull air from anywhere it can; case seams, connection ports, ANY opening in the case. I had a projector on my bench a few years ago that had not seen ANY maintenance and was used in an unclean environment. Every crack and all the unused connection ports were caked with dust. Needless to say, it was filthy inside.