KLEER Sheets are great for a variety of millwork applications, and other custom PVC uses. They are available in a wide range of thicknesses and sizes, smooth on both sides. Kleer is a highly versatile product for many exterior and interior trim and decorative applications. Expanded cellular PVC delivers all the advantages of natural wood without the high maintenance. - 1-1/4 in. KLEER PVC Sheet, 4 ft. x 8 ft.