This dust collector will have sufficient flow with two open gates. Occasional use with three gates open is acceptable. The 'nano' filter option ($100) is recommended (Efficiency: 99.999% at .5 micron) | This dust collector will have sufficient flow with two open gates. Occasional use with three gates open is acceptable. The 'nano' filter option ($100) is recommended (Efficiency: 99.999% at .5 micron) |