A cleanroom does not stay clean because of air filtration alone. Every surface inside the room can affect how easily the facility controls contamination. Walls face constant exposure to people, equipment, cleaning agents, moisture, and airborne particles. If the wall surface absorbs moisture, develops cracks, or becomes difficult to clean, it can complicate routine sanitation. That makes PVC cleanroom wall panels more than an interior finish. They can become an important part of a practical contamination-control strategy.