Your shop may look clean, but how clean is the air? The Powermatic PM1200 Air Filtration System traps up to 99% of all 5-micron particles and 85% of all 1-micron particles for a healthier work environment. This air filtration system has three blower speeds that modify air flow. The air filtration system can be operated either at the cabinet or with the remote transmitter which uses radio-frequency, eliminating the need for line-of-sight operation. The timer on the air filtration filter has nine settings, allowing continuous operation for up to 9 hours while you're away, and will shut off at the end of that period. The filter guards on the air filtration system can be removed and installed without tools, for instant filter access.5 year