Carlon Flex-Plus Blue™ Electrical Nonmetallic Tubing is specifically designed for installation in walls, floors, slabs and ceilings, conforming with current NEC, Article 331. It is manufactured from tough, noncorrosive, nonconductive thermoplastic material. Flex-Plus Blue is lightweight, making installation quick, easy and efficient. The corrugated design facilitates easy wire pulling and pushing and its flexibility eliminates the need for bending equipment.