Meets Class A Load Requirements Loads of 1-60 psi. Recommended for pedestrian, bicycles and wheel chair traffic Made of heavy duty polyethylene Dimensions: 22.2” L x 22.0 W” x 2.0 H This StormDrain FSD-3017-C20 20” Round Solid Catch Basin Cover in Green is made of heavy duty polyethylene. This cover meets Class A Load Requirements (1-60 psi loads). The catch basin cover is recommended for pedestrian, bicycles, and wheel chair traffic. It also meets ADA requirements.