Attributes . UL 4, 83, 1479, 1581, 2556, File Reference E7330; NECandreg; 250.118(8), 300.22(C), 392, 320, 517.13, 518, 645; Federal Specification A-A-59544 (Formerly J-C-30B); Meets all applicable OSHA and HUD Requirements; Cable Tray Rated, install per NECandreg;; UL Classified 1, 2, and 3 Hour through (Fire) penetration product, R14141; Environmental Air-Handling Space Installation per NECandreg; 300.22(C); U.S. Patent No. 8,278,554 B2; Made in USA of US and/or Imported Materials . Names