Mirror finish polished 4" Dia. 316SS platens for making polymer films, threaded for optional handle with drilled thermocouple port, set of 2. The 4" diameter polished platens are useful for making large diameter polymer films. The platens are made from 1/2" thick 316SS. Platen surfaces are polished to a mirror finish. There are ports in the platens to enable insertion of a thermocouple probe. The platens are also tapped with a female thread to allow attachment of an optional handle. Optional spacers to contain polymer samples are available in thicknesses and diameters specified by the customer. The platens are compatible with our standard heated platens (0012-6664).