Powered by compressed air, the Guardair Material Mover® portable, in-line vacuum system is developed to transport materials from point A to point B. Featuring a 2½" diameter throat, the lightweight, easy-to-handle Material Mover vac is ideal for moving seed, grains, corn, beans, plastic pellets, or other dry materials. Perfect for cleaning out agricultural equipment including combines and seeders, or moving material into storage bins or silos. Minimizes damage to transported materials and reduces waste. No moving parts or motor to burn out. Available in two versions – 4 Nozzle (83 cfm) designed for a 100 cfm in-plant, compressor, and 8 Nozzle (165 cfm) designed for a 185 cfm tow-behind compressor. Both versions available in standard or static (electricity) conductive configurations.