Vertical Door Conversions - Complete bolt on system. Includes (2) pivotal assemblies. All the mounting hardware, wire extensions, gas charged lift shock, and a detailed instruction manual. Each door usually takes 2 hours to install. The Vertical Door Conversion system is made of high strength steel. All of the systems're hardened for durability. The gas charged lift shocks were carefully made to the exact specifications specially for the kit. They were tested for the exact air pressure needed to make the vertical door conversion kit rise effortlessly. The gas charged lift shocks make the door feel weightless when you lift it vertical.