Product details:
Ideal for yard / area drains to collect surface water while minimizing the amount of debris entering the system. Features Actual dimension 16 3/4" x 16 3/4" x 1" Use with 18" Catch Basin Series Square heavy duty galvanized steel bar grate Open surface area 291.00 square inches 381.21 GPM Recommended for heavy-duty pneumatic tire forklifts and tractor trailers at speeds less than 20 mph with proper installation Loads of 176-325 psi H20 Rated Load rating is based on encasing product in concrete