Smoke Damper, NFPA, UL Life Safety, Fire Damper MCDLG Interviews - Greg Crosby on NFPA 2018 and UL Life Safety May 11, 2018, 2:14:04 PM We discuss the NFPA 2018 Conference and UL Life Safety dampers with Greg Crosby, VP of Sales for Air Balance and MCDLG. Read More