Corner Aluminum trim 15 x 15x 1 or 2 mm These aluminum trims are available in almost any Bulding/Construction material store. PSU All Parts Length and Height This simple case I made it with dimensions 230 mm Length x 220 mm Height. If your graphic card is Longer than you can make the case larger/Longer. The Middle Part ( 226 mm ) marked with Red is 4 MM shorter because the Aluminum trim thickness. Dimensions ** 120 mm marked with red is the dimension of the GPU with the Dock.