579-0500,
5790600220,
【Wiremold】5790B,电线导管 Armored Cble Cnctor (Galvanized)
5790-I,B689 5790-I WHT/GRN STYLE I
5790-II,B689 5790-II WHT/GRN STYLE II
5790-O,B689 5790-O WHT/GRN STYLE O
【Wiremold】5791,电线导管 EMT Box Adapter 1/2"