Introducing the Glo-Ray® Built-In Heated Shelf with Flush Top, a quick ship model that is perfect for adding heat to your serving surface. This heated shelf features a 31-1/2" x 21" surface area with a hardcoat aluminum top for durability. It also includes a control thermostat and an illuminated on/off switch for easy operation. The shelf comes with a mounting bracket for easy installation. With a power rating of 665 watts and a voltage of 120v/60/1-ph, this heated shelf is designed to provide uniform heat distribution to extend your food holding time. It is NSF, cUL, UL, UL EPH Classified, ANSI/NSF 4, and CSA certified for added safety and reliability. The built-in adjustable thermostat allows you to control the surface temperature, while the fiberglass insulation keeps heat at the holding surface. The shelf has a .75" flanged edge that allows it to fit into a countertop opening. It is recommended for use in metallic counters, but can also be used on other surfaces as long as they are suitable for temperatures up to 200°F. The GRSBF models are available in various widths and depths to suit your needs. Please note that models with a flush mount recessed electronic control box are not CE approved. Additionally, non-standard colors are non-returnable and Hatco is not responsible for any counter damage caused by heat from the warmer. Optional features include designer colors for the flush mount control bezel box, conduit in lieu of the standard 3' length, stainless steel top surface, and flush mount electronic or thermostatic control box with a lighted power switch and cord and plug.