352.44, if PVC conduit is installed in a straight run between securely mounted items such as boxes, cabinets, elbows, or other conduit terminations, expansion fittings must be provided ...

The assets of Heritage Group, a U.S. manufacturer of PVC conduit, fittings, elbows and plumbing ... of galvanized steel tube and pipe, electrical conduit, armored wire and cable, and metal framing ...