As the premier underground utility supply & electrical supplies distributor in the southwestern U.S., Cal-Duct, Inc. is uniquely positioned to provide you with practical, reliable materials like HDPE conduit, PVC conduit and pull boxes: As your infrastructure, power and wireless needs evolve, Cal-Duct, Inc. is also ready to respond with high-caliber fiber optic cable, sturdy boring/directional drilling fittings and wireless communications supplies. Get reliable products at competitive prices — backed by the full support of a 40 year, family-owned business.