To begin designing your vertical washer-dryer cabinet, first decide upon the space and the area in which you would like to construct it. If you have a small space, stacking the washer and dryer can be a convenient option. To start with, measure out the depth of your machines--how much are they protruding from the wall surface. Add a few inches to this for pipes and working space and design a frame that would adequately cover the machines. Instead of having a hooked base, design the cabinet so that it can be rolled out on casters for easy cleaning. Lastly, measure out and design the door to suit the room décor.