The Only Access Door Tested for Air Infiltration and Water Penetration. The WB ADWT air tight and water tight  access door is a flush access panel that has been tested for air infiltration and water penetration. The door panel and trim are fully welded and gasketed. This access door is ideal for use in laboratories, clean rooms, operating rooms, etc. where an airtight/watertight seal is required. This airtight watertight access door can be made out of primed white or stainless steel. This waterproof access door / panel is perfect for environments where a test water tight or air tight access door is required. These environments could be laboratories, pharmaceutical buildings, hospitals, or any where a tested air tight / water tight access door is necessary. This air tight / water tight access door comes in all the popular sizes such as 12x12, 18x18, and 24x24; however, custom sizes are available upon request.