Terminal Blocks, Multi-Position Blocks and Strips: Type - Terminal Block, Barrier Style; Number of Rows - Double Row; Poles - 10P; Rating - Voltage - 300V; Rating - Amps - 20A; Terminal Capacity-Size - 12 AWG; Terminal Type - Binding Head Screw; Base Style - Mounting - Closed Back, Surface Mount; Center Spacing - 0.375" (9.52 mm); Material - Terminal - Plated Brass, Steel Screw; Material - Housing - Thermoplastic; Housing Finish - Black; Operating Temperature - 105 deg C (221 deg F) Max.; Length - in - 4.41"; Length - mm - 111.9 mm; Manufacturer Series - 38770 Series