Cable Connector Box Connection 1/2 in NPT Trade Size 1/2 in Zinc Insulated No Gray For Use With Flexible Conduit CSA File Number C22.2 18.3-04 Federal Specification Number A-A-50552 NEMA Standard FB-1UL Standard UL-514BUNSPSC 39121419ETL File Number ETL 100511099CRT-001 Connector Style Straight Snap-In