UNDERWRITERS' LABORATORIES     ALL ITEMS SHOWN IN THIS CATALOG ARE REGULARLY INSPECTED IN OUR FACTORY BY UNDERWRITERS' LABORATORIES AND ARE FULLY UL LISTED, LABELED, AND APPROVED FOR USE UNDER THE UL "MASTER LABEL" PROGRAM.  IN ADDITION, ALL THOMPSON COMPONENTS MEET OR EXCEED APPLICABLE CRITERIA SET FORTH BY THE NATIONAL FIRE PROTECTION ASSOCIATION AND THE LIGHTNING PROTECTION INSTITUTE FOR LIGHTNING PROTECTION USE UNDER NFPA 780 AND LPI 175. BACK TO CATALOG INDEX