This weigh scale box-filling unit was designed to meet standards for a semi-clean area. To protect from airborne contaminants, the box-filling unit is covered by an aluminum frame, wire reinforced, lexan enclosure. The bottom of the enclosure is constructed of stainless steel sheet metal. Flexible, poly-vinyl curtains at both ends allows containers to enter and exit easily. An exhaust fan inside of the enclosure, evacuates dust or other airborne particles that may find their way into the system. Both sides of the enclosure are fitted with gas assisted, hinged covers to allow extra easy access for quality control and maintenance.