Access Door - The Acudor ADWT access door is a flush access door that has been tested for air infiltration and water penetration. The Door and frame 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. Standard in type 304 stainless steel with a #4 satin polish. Prime coated Steel is also available.