The 9-966140-6 is an unsealed 2.8 housing designed as a vertical PCB board header with 21 positions for the AMP MCP interconnection system. The housing is constructed from PA 66 GF13 material in black color and features CuSn4 headers with tin plating (silver plated on request). It accommodates a wire size range of 2.5 mm² FLR M and is designed for reliable mating with compatible receptacle housings. This product is commonly used in electronic interconnection applications where vertical PCB mounting and multi-position connectivity are required, offering a robust solution for industrial and commercial equipment assembly.