NDS 78S 4 in. Sand Flat Top Atrium Grate
NDS 78S 4 in. Sand Flat Top Atrium Grate. Type – sand flat top atrium grate. Structural foam polyolefin With uv inhibitors. Open surface area is 17.00 sq. in. Flow rate of 22.27 gpm. Fits 4 in. sewer & drain pipe & fittings.