Deep Bed Scrubber shown below are typically used for positive pressure on control rooms. These units can have 6" to 18" thick beds and multiple series of stages of filter media. Often these units will have different media in the different sections to adsorb a range of gases. Deep Bed Scrubber (DBS) are designed for areas where there are high contaminant gas levels and provide more effective protection against environmentally induced corrosions in control and switch gear rooms equipped with electronic process control systems, refineries, steel mills, smelters, chemical plants, petrochemical plants and other hostile environments.