The Cambro MDSP9477 Thermal Pellet Base is designed for optimal heat retention and insulation. With an outside diameter of 9-1/2 inches and a height of 1-3/4 inches, this underliner is crafted from durable plastic in a sleek dark gray finish. It is NSF certified, ensuring it meets strict public health standards. Ideal for maintaining food temperature, this thermal pellet base is a reliable addition to your food service equipment.