The key to finding the right custom electrical enclosure is to first decide what you will be using it for. Several important factors to determine when selecting the right product for you include: size of enclosure needed, material type and selection, finish, and Nema rating.
Step one: How to determine the correct size. Electrical enclosures can range in size from several inches to large, walk-in style containers and metal rooms, generators, and transformer housings. Decide which style is best for you from choosing smaller wall-mount, or floor mounted to larger outdoor enclosures. The overall size is ultimately determined by the dimensions of the internal components which the enclosure will be housing. Many users also decide size based on several factors including the amount of heat generated by the electrical parts and the sub sequential amount of required air-flow necessary to cool those parts. The National Electrical Code(NEC) outlines the proper air flow and construction requirements based on the amount of heat generated and is a good tool to help in the selection process.