Clamshell Buildings are more than just prefabricated hangar-style units. These buildings are designed and supplied by Clamshell, a company which specializes in this particular structure, and are engineered to specific tolerances.
Construction of prefabricated structures can be an issue-laden situation for many reasons. Companies are often reluctant to use such facilities due to the nature of these particular facilities.
Many firms need a building requiring minimal set-up and maintenance so they can focus on the work at hand. Clamshell hangar-style buildings offer a level of versatility few other structures provide.