Fire Alarm Cable Connector; Type Straight; Trade Size 3/8 Inch; Knockout Size 1/2 Inch; Cable Opening Single; Cable/Conduit Type Steel/Aluminum Armored/Metal Clad Cable; Cord Size (2) 18 AWG to (4) 12 AWG (Solid TFN/THHN, Fire Alarm), (2) 18 AWG to (2) 14 AWG (Solid Twisted Pair, Fire Alarm), (2) 14 AWG to (3) 10 AWG (Armored/Metal Clad Cable); Length 1 Inch; Installation Strap; Throat Type Insulated; Material Red Die-Cast Zinc; Standard Package 500; Approval UL 514B; ROHS Compatible; Applicable Standard Federal Specification A-A-50552, NEMA FB-1; Throat Size 13/32 Inch Dia