There are HDPE Sheets offered by us can be heat formed, shaped, and welded to fabricate ducts, hoods, and much more. The material cannot be cemented, but it is easily welded with a plastic welder. It is a non-porous material known for its resistance to chemicals and solvents that also meets all standards established by the FDA for food contact. This sheet can be heat formed, shaped, and welded to fabricate ducts, hoods, and much more. The offered HDPE Sheets are very useful.