Duall Division since 1964 has been fabricating and marketing odor and pollution control ventilation systems for municipalities and industry. Technologies included Carbon Adsorbers, Aerators/Air Strippers, Chemical Scrubbers, Bioligical Scrubbers and Venturi Dust Collectors. Duall maintains a full Engineering staff to assist in design of systems. Duall's single source responsibility concept gives owners the assurance of projects being managed from conception through testing of the system.