Laminar Air Flow Horizontal type PSAW Available in horizontal and vertical type , a useful instrument for production of clean air, made of 19 mm thick laminated board. Work bench of perforated stainless steel. Clear acrylic side panels and collapsible front door. Room air is taken through the bottom of the cabinet through the pre filter which traps large size particles and increases the life of main hepa filter Air is forced evenly through hepa filter , resulting in a stream of unidirectional clean air within the work zone of cabinet . Available in following four size (in feet)