NDS 78S 4 in Atrium Grate - Sand, UV-Stable Polyolefin

The NDS 78S 4 in Atrium Grate in Sand is a UV-stable polyolefin drain grate engineered to protect landscape drainage while allowing efficient surface water flow. Its domed design keeps leaves and mulch away from the pipe opening for reliable performance in residential and light commercial settings.

• Compatibility: Fits 4 in sewer and drain pipe fittings, 4 in single-wall corrugated pipe, and 4 in triple-wall pipe for a soil-tight fit.
• Material: Made from UV-treated HDPE/polyolefin to resist fading, cracking, rust, and most chemical exposure.
• Performance: 17.0 sq in open surface area and a flow rate of 52 GPM to handle moderate runoff.
• Dimensions: Overall height 4-7/16 in; top diameter 2-3/4 in; grate openings are 1/4 in wide.
• Maintenance: Lightweight, removable grate for easy access, cleaning, and inspection—maintenance-free under normal conditions.
• Applications: Ideal for mulched landscape beds, natural areas, window wells, and other areas where debris exclusion and soil-tight drainage are required.

Refer to the NDS technical specifications and product catalog for installation details, flow charts, and compatibility guidance. Designed for straightforward installation with standard 4 in drainage systems and available in multiple colors and materials to match project requirements.