The VS-25-T-2M20 1689792 is a metal enclosure made by Phoenix Contact for D-Sub connectors. It is designed to connect two 25-pin D-Sub connectors and one 44-pin D-Sub High Density connector, and isolates them electrically and mechanically for added safety. The material used for the enclosure is a cold-rolled steel which is said to be resistant to abrasion and welding splatter. This product is certified in accordance with UL, CSA, CE and IEC standards, making it safe and reliable to use. In addition, it is also said to be resistant to corrosion, shock, and impact. The internal mounting plates are made of aluminum, lined with dielectric material.