Precision equipment peripheral protective cover to protect partial cleanliness from pollution. Using the Box Section as frame , Forming an airtight Box area through the partition wall made up by Box Section and PVC Panel on all sides, and covered by Airtight Blind Plates on the top, and its interior cleanness class can be up to 10-100000,it is specially used in the areas of high class purification requirement, and it is usually applied to streamline operation area and high precision product assembly area etc. Decorative Accessories: Door Stopper, Handle, Nylon Hoof, Cover Plate, etc. Square Tube Diameters:30mm,40mm,45mm,50mm, etc. Variety of corner pieces can be available.