Non-metallic conduit is mostly made up of PVC conduit. PVC conduit is popular because of its light weight when compared with steel or metal conduit. PVC conduit is also favored as it is typically lower in cost. As you may imagine, PVC conduit requires PVC fittings including outlet bodies. Most of the same types of fittings used with metal conduit are used with non-metal conduit. Other benefits of non-metallic conduit are: moisture-resistance, resistance to corrosive substances, and ease of installation. Graybar supplies a wide variety of PVC conduit, elbows, outlet bodies, and PVC coated accessories as well.