Alto-Shaam 500-3D Freestanding Three Drawer WarmerGentle, radiant Halo Heat technology evenly surrounds food without the use of extremely hot elements, added humidity or fans. Food is held at its optimal serving temperature with no overcooking or drying out, reducing food waste and keeping customers coming back for more. No moving parts improves reliability. Save time and labor costs by prepping food in advance then holding for service. Little to no operator training required. Removable side rails