Hallsten Corporation manufactures high quality extruded aluminum odor control covers for a variety of environmental applications. Hallsten Corporation’s patented aluminum extrusions allow the company to design a cover system that is able to meet demanding project specifications as well as provide features not found in other cover systems. Applied in conjunction with the other odor control measures employed on a project, a Hallsten aluminum cover system provides a major contribution to the overall odor control improvements at any facility. Hallsten Corporation. Ingenuity Covered.