NDS 3" Green Polyolefin Flat Top Atrium Grate. Made of structural foam polyolefin with UV inhibitors, this durable grate has an open surface area of 9.50 Sq.In. and a flow rate of 12.45 gpm. It fits 3" sewer and drain pipe and fittings, 3" corrugated pipe, and 3" triple wall pipe. Backed by a limited lifetime warranty.
WARNING: This product can expose you to chemicals, including Vinyl Chloride which is known to the State of California to cause cancer or birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov