The Vollrath 1500-31 Traex® Snap-On Bus Box Cover is designed to fit 1520, 1521, and 1527 bus boxes. Measuring 22-1/8"W x 15-5/8"D x 2-1/2"H, this cover is crafted from high-density polyethylene for durability and long-lasting use. Its gray color provides a professional appearance, while the NSF certification ensures it meets strict public health standards. Made in the USA, this cover is a reliable choice for efficient food service operations.