The box is designed to contain coronavirus when it becomes airborne and prevent it from going on to contaminate doctors and nurses while they ventilate a patient. The initiative is not-for-profit and the product is being offered at cost.
The manufacturers have made it an open source design, which means others can take it and put it into production in their own countries. It is designed to fit on the trolley or the operating table and to give the clinician's hands access to the patient at the head end. The product has evolved so that it is now a tapered design, so the head end is a little narrower, so that it can fit on the surgical table.