U.S.SAWS vacuums are specifically designed for concrete dust and the construction industry. All our vacuums are OSHA compliant under the Table 1 Silica Dust guidelines when used properly. Oversize filters maximize airflow even while the dust bin in near capacity. The Ultra-Vac line is a simple rugged design to withstand the abuse of even the toughest crews. The Dura-Vac line is a longopac bag style vac that is made with high quality components for years of service. If you would like to speak with one of our Vacuum Specialists, please call us at: 1-877-817-6687.