Proline™ 300 & 400 Doors are available in both solid core and insulated models. They are designed for strength and durability in tough, abusive applications. They provide visual separation, sound attenuation and thermal separation. The doors can be manufactured to fit virtually any size opening. The door is designed to comply with all USDA sanitation requirements.Surface coverings available in full height high pressure laminates, ABS impact resistant plastic, FRP, stainless steel, galvanized steel or aluminum.