The Tuf-Tite B4-DG 16" x 16" Grate is a heavy-duty, ADA-compliant plastic drain grate designed specifically for the Tuf-Tite B4 series distribution and drain sump boxes.Features:Material: Made from durable, UV-stabilized, and non-corrosive polypropylene plastic, ensuring a long-lasting solution in various environments.Dimensions: Measures 16 inches in length and width with a depth of 2 inches, designed for a precise fit with Tuf-Tite 16" x 16" boxes.Load Rating: Suitable for medium truck traffic wheel loads.Compliance: The grate is ADA compliant.Hole Size: Features standard 1/2 inch by 1/2 inch holes for effective water drainage.Compatibility: Designed to interlock securely with Tuf-Tite B4 risers to extend to grade for maintenance access