Below is a pre-fabricated gym room project for free use by Nigerian clients for the police department. This prefabricated gym room is crafted with exquisite craftsmanship. As this is a large gymnasium, the overall structure of the building is based on sturdiness and beauty. The designer has continuously improved the design scheme based on the site environment and customer needs, and finally got the recognition of the customers. The prefabricated gym board room is very good here. Applications.