INSERTA FITTINGS,formally Fowler Mfg, was established in 1969 as an excavating company. Disatisfied with existing lateral connection methods it developed the INSERTA TEE.Initially, for SDR 35 swr laterals going into SDR35 swr, concrete and clay mainlines. Today, INSERTA FITTINGS has expanded it product line to be able to connect most popular laterals to any mainline or structure. Which includes most of the liners used in trenchless applications. INSERTA FITTINGS is the "Lateral Connection Solution" !