Which type of shells should be considered for cleanliness and slope toward the room?

Window sills should be considered for cleanliness and slope toward the room because they are often overlooked areas that can accumulate dirt, dust, and debris. Proper sloping toward the inside prevents water from pooling, which can lead to mold growth, pest attraction, and other sanitation issues. Since window sills can be a point where food particles or liquids might collect, keeping them clean is crucial for maintaining overall hygiene in food preparation and service areas.

While wall panels, counter tops, and ceiling tiles also require attention to cleanliness, they do not share the same functional role of managing moisture and debris in the same way that window sills do. Keeping window sills properly maintained contributes significantly to the prevention of potential food safety hazards in a food service environment.