Abstract: An enclosure for a skid assembly is provided. The enclosure mounts to a modular trailer body that can be converted between a wheeled assembly and a drag skid. The enclosure is bolted to the trailer body to muffle sound produced by the pump and engine. The enclosure is a modular assembly provided as a “flat pack” that can be assembled with bolted connections, allowing the enclosure to be delivered efficiently and in a cost effective manner. The enclosure provides for improved access by including coach-style doors on both sides, using removeable top panels, and including a front side louver bracket on hinges.