|Powermatic 1791330 PM1200 1/4 HP Air Filtration System Three filter system includes a diffuser to disperse exhausted air. Remote control operates on radio frequency for a wider range of effectiveness. Timer has nine settings for up to nine hours of continuous operation. Inner filter has fine mesh pockets for high efficiency; can be blown or washed clean. Electrostatic outer filter is disposable. Four eye bolts allow suspension from shop ceiling. Indicator lights up after 200 hours to remind user to replace filters. Three blower speeds to modify air flow. Filter guards snap on and off easily for quick access to filters. Two carry handles for portability.