The Drop-In Round Heated Well warmer from Hatco holds a variety of hot and fresh foods at safe-serving temperatures, with self-adjusting thermostats that read the actual temperature of the well and add heat only when needed. HWB-xxQTD models are equipped with a drain. Includes a separate lighted On/Off rocker switch and temperature dial, allowing preset temperatures to be maintained.50% larger drain with flat screen simplifies cleaning and holds pans level.