If the GRSB or GRSBF Glo-Ray® Heated Shelves are to be installed in these or similar countertops, it is recommended that the manufacturer of the countertop material be consulted. In regard to Corian®, it is important to use the high temperature cutout procedures when cutting the hole in the countertop. In regard to laminate, it is important that both the laminate material itself, and the adhesive that is used to adhere it to the countertop, be capable of withstanding the temperatures around the edge of the heated base (200°F [93°C]).