The Hospital Operating Room Diffuser (HORD) air curtain system is engineered for the demanding needs of operating rooms. The HORD air curtain system is fully customizable and integrates seamlessly with laminar flow diffusers and low-level exhaust grilles to minimize mixing of room and supply air in the operating area. This customizable air curtain system can be fabricated with aluminum or stainless steel, with mechanically fastened or continuously welded end caps to suit project requirements.