Walls and ceilings of food service areas shall be of tight and substantial construction, smoothly finished, and painted in a light color. The walls and ceilings shall be without horizontal ledges and shall be washable up to the highest level reached by splash and spray. Roofs and walls shall be maintained free of leaks. All openings to the exterior shall be provided with doors or windows that will prevent the entrance of rain or dust during inclement weather.
15 Miss. Code. R. 16-1-49.31.2