Standard HOSE, AIR DUCT, SEMIFLEXIBLE, SLEEVE SECTION, UNREINFORCED, SELF EXTINGUISHING 2013-01-28 CURRENT AS1506C
Standard HOSE, AIR DUCT, SEMIFLEXIBLE, SLEEVE SECTION, UNREINFORCED, SELF EXTINGUISHING 1998-06-01 HISTORICAL AS1506B
Standard HOSE, AIR DUCT, SEMIFLEXIBLE, SLEEVE SECTION, UNREINFORCED, SELF EXTINGUISHING 1986-03-01 HISTORICAL AS1506A
Standard HOSE, AIR DUCT, SEMIFLEXIBLE, SLEEVE SECTION, UNREINFORCED, SELF EXTINGUISHING 1978-11-01 HISTORICAL AS1506