Evaluate Slip Fitting Properties and Code Compliance

What happens here

Following the demonstration of the slip fitting's two-piece design, the dad discusses several important characteristics. He notes that the material of the fitting is stronger than standard EMT (Electrical Metallic Tubing) but not quite as robust as rigid conduit, positioning it as a good option for certain applications. Crucially, he points out that the specific fitting he is demonstrating lacks a visible UL (Underwriters Laboratories) listing. He emphasizes the importance of UL listing for electrical components in the USA, as it signifies compliance with safety standards and is typically required by electrical codes. He concludes by mentioning that these slip fittings are generally easy to find at electrical supply houses and are available in various sizes to suit different conduit diameters.

Goal: Understand the material properties, availability, and critical safety/code compliance aspects (UL listing) of the slip fitting.