Access door frame shall be fabricated from 16 gage galvannealed steel with a prime coat white finish and provided with bolt holes. Access door panel shall be fabricated from 16 gage galvannealed steel with a prime coat white finish. Door shall be filled with 1 inch thick, rigid foam insulation and neoprene gasket on four sides. Access door shall have a concealed hinge with exterior lock that features a threaded ring latch or key operation. Internal latch release is included enabling the door to be opened from the inside. Finish shall be prime coat white suitable for painting.