It constructed of stainless steel around with heat resisting and thermal insulate. ROVSUN 110.00V 800.00W Three Layers Stainless Steel Color Stainless Steel/Tempered Glass Warming Cabinet. 【Internal Illuminating Light】: Built-in a bulb holder for installing a 25W bulb to illuminate the display case, bright and eye-catching, making your food looks more attractive and lustrous.