The Acudor AS-9000 is a fully gasketed access door, designed for use in walls and ceilings. The formed door panel, with a concealed hinge, and closed cell neoprene gasket, provides for a tight fit. Most popular in stainless steel, with a #4 satin polish, this door is also available in prime coated steel. This door is commonly used in clean rooms, laboratories, operating rooms, etc. Please note that although being fully gasketed, the AS-9000 has not been tested for air penetration.