The RIKON 62-100 is specifically designed to filter 98-99% of all particles, five microns in size and 85% of particles one micron in size. Model 62-100 is 950 CFM and has 3 speeds: 480, 750 and 950 CFM. At high speed, the 62-100 can filter the air in a 20' x 20' x 8' shop 14 times in less than an hour. The outer filter is 5 micron, and the inner pocket filter is 1 micron. The programmable timer can be set for two, four or eight hours. These units are designed to be set on a workbench or hung from the ceiling. Includes: remote control and hardware for ceiling mount applications.