UL 1569, UL 83, UL 1479, UL 1581, UL 2556, E80042 NEC® 330, 300.22(C), 230.43, 250.118, 392, 396, 501, 502, 503, 530, 518, 520, 645, 690.31(E) Meets all OSHA and HUD UL Classified 1, 2, and 3 hour through (Fire) penetration product, R–14141 NEC® 300.22(C) Environmental Air Handling Spaces