For installation at grade or with in-line piping between 12" and 18" below grade. A complete dry chemical dosing system for flow rates up to 200,000 GPD (150 GPM). The IT4000S is suitable for contact chamber, concrete pad or support bracket mounting and includes an adjustable outlet sluice for precise chemical application. The IT 4000-S has four (4) feed tubes and 6" inlet and outlet connections.