H-Strut electrical products are UL listed and can be safely used in all raceway systems that are attached to ceilings, steel beams or embedded in concrete to ensure the appropriate alignment over extended areas. Our electrical products are manufactured and tested to comply with the UL standard for Safety for Strut-Type channel raceways and fittings (UL 5B) in accordance with Article 384 or the 2002 National Electrical Code, NFPA 70.