Retail stores and collectors alike will need to install wall display showcases against wall that may be up to forty feet long. To cover that much space sectional wall display cases are the best option. For one you can purchase them standard and it is more economical and sectional wall cases are readily available on the market. Any manufacturer offers the same style and design in different widths. Given a good quantity they will accept to do custom width wall cases to fit the overall required dimensions. Once all installed against the long wall all there is to do is to push them against each other tightly. Then only they may be leveled and bolted together. Holes should be drilled on the sides of the sectional wall showcases in order to bolt them tightly. The result will be a uniform look that is structurally sound.