1/4″ machinable high density plastic board supplier. Piedmont Plastics offers HDPE for cutting boards in three standard sheet sizes: 48” x 96”, 48” x 120”, and 60” x 120” in gauge sizes ranging from 1/4” to 1”. Piedmont works with several HDPE suppliers to be able to offer you the widest selection of lors, sizes, and thicknesses.