Terminal Block End Covers and Partition Plates: Plate Type - Terminal Block End Barrier; Construction Style - IEC; Block Models - D-ST 4-TWIN; Width x Height x Thickness - in - 2.81 x 1.43 x 0.08; Width x Height x Thickness - mm - 71.5 x 36.5 x 2.2; Material - Polyamide; Color - Gray; Model Number - D-ST4-TWIN; Manufacturer Series - D-ST