What is the base of your irrigation system?
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Use with 18" x 18" Catch Basin Series.
** BEFORE installing a drainage system, please check your local codes and regulations and install accordingly. **
18" Square Structural Foam Polyolefin Grate with UV inhibitor. Open surface area 104.00 square inches. 136.24 GPM.
Square Grate Load Recommendation: CLASS A
To learn more about general drainage and catch basin installation, please watch the videos below: