HEPA filter certified to 99.99% efficiency (0.01% permeability at 0.3 - 0.5 microns (µm). Variable speed power enables operator to adjust the suction power to the application. 3 stage HEPA filtration system suitable for use with dry L class materials only. Includes: Floor nozzle, 1 1/2" x 11 1/2" hose, 1 1/8" x 11 1/2' hose with front cuffs 22, 24 and 38, poly bag (10/pk), 22" straight pipe, 22" bending pipe, 12" corner nozzle, HEPA filter, damper, prefilter, accessory tool box.