NDS 905PB 3" Polished Brass Round Grate with Collar, Connects to 2" Pipse and 3" Fittings prevents leaves and debris from entering the pipeline while letting stormwater through. Features an open surface area of 2.7 sq. in. and flow rate of 8 GPM. Ideal for draining light flows from small lawns, landscaped areas, patios, and walkways. The 3 in. Round Grate with Collar connects to 2 in. Sch. 40 pipe and 3 in. sewer and drain fittings for a soil-tight fit. The brass grate is resistant to rust and corrosion, and fitted onto a polyvinyl chloride (PVC) collar treated with UV inhibitors. Hassle-free limited lifetime warranty guarantees the NDS product is free from defects—or we’ll replace it.