The Glo-Ray® Built-In Heated Shelf with Flush Top is a versatile and efficient addition to your serving surface. With a surface area of 25-1/2" x 17", this shelf features a hardcoat aluminum top for durability and uniform heat distribution. The blanket-type element ensures that your food stays warm for longer periods of time. The built-in adjustable thermostat allows you to control the surface temperature, while the illuminated on/off switch makes it easy to operate. This shelf is NSF, cUL, UL, UL EPH Classified, ANSI/NSF 4, and CSA certified for added safety and reliability. It is recommended for use in metallic counters, but can also be used on other surfaces as long as they can withstand temperatures up to 200°F (93°C). The shelf comes with a mounting bracket for easy installation. Optional features include different colors for the flush mount control bezel box, conduit options for power lines, a stainless steel top surface, and different types of control boxes with lighted power switches. Please note that models with a flush mount recessed electronic control box are not CE approved, and non-standard colors are non-returnable. Hatco is not responsible for any damage to the counter caused by heat from the warmer.