The MetroMax® 4 Standard Duty Shelf Divider measures 18"W x 8"H and is designed for use with both grid and solid shelving. Its three-piece design allows for easy assembly and customization to fit your storage needs. Made from durable polymer, this shelf divider is NSF certified, ensuring it meets strict public health standards. Ideal for organizing and maximizing shelf space, it helps keep items neatly separated and easily accessible.