Durable, lightweight and UV-stabilized, the NDS 13S 4" round drain grate provides reliable surface drainage for patios, walkways, lawns and other light-traffic outdoor areas. Molded from structural foam polyolefin, this heel-proof grate resists rust, chemicals and sun exposure while fitting standard 4" drainage systems. Compatibility: Designed to connect to 4" sewer and drain pipe and fittings, 4" corrugated pipe, and 4" triple-wall pipe for a soil-tight fit. Material & Finish: Structural foam polyolefin (polypropylene family) in sand color with UV inhibitors to reduce fading and cracking. Dimensions: Approximately 4-5/8" diameter and 1-1/2" height; open surface area ~3.85 sq in for efficient flow. Performance: Heel-proof design suitable for pedestrians, bicycles and wheelchair traffic; flow capacity suitable for light stormwater runoff. Durability: Chemical-resistant, rustproof and maintenance-free; lightweight for easy handling and installation. Use Cases: Ideal for driveways, landscaped areas, patios, atriums and any location that requires shallow surface drainage. This NDS grate is a proven alternative to heavier metal or concrete covers when a low-profile, corrosion-resistant solution is desired. Install into standard 4" drain assemblies for a secure fit; available in multiple colors to coordinate with landscape or hardscape finishes.
