Standard HOSE, AIR DUCT, FLEXIBLE, HELICAL, NONMETALLIC WIRE, SUPPORTED (EXPOSED), SELF EXTINGUISHING 2013-01-02 CURRENT AS1504A
Standard HOSE, AIR DUCT, FLEXIBLE, HELICAL, NONMETALLIC WIRE, SUPPORTED (EXPOSED), SELF EXTINGUISHING 2011-08-15 HISTORICAL AS1504