NDS 90 — 6" Round Atrium Grate, HDPE Raised Dome (Black)

The NDS 90 — 6" Atrium Grate is a raised-dome drainage cover engineered for mulched landscape beds, window wells, and debris-prone planting areas. Molded from UV-stabilized HDPE, the grate is lightweight, rustproof, chemical-resistant, and designed to limit clogging while maintaining consistent water flow.

• Material: UV-treated high-density polyethylene (HDPE) for long outdoor life.
• Compatibility: Fits Spee-D® Catch Basin, 6" sewer & drain pipe and fittings, and 6" single-wall corrugated pipe.
• Dimensions: top diameter 3-7/8" (3.88"), overall height 5-3/4" (5.75"), grate openings 1/4".
• Hydraulics: open surface area ~28.4 sq in; flow capacity ~87 GPM for moderate stormwater flows.
• Benefits: lightweight (~0.62 lb), maintenance-free, chemical- and UV-resistant; raised dome blocks mulch and leaves while allowing continuous drainage.
• Color/Options: Standard black finish; NDS offers alternate materials and finishes for other applications.

Use the NDS 6" Atrium Grate to protect downstream pipes and minimize maintenance in landscaped or natural areas. Refer to the manufacturer's tech spec and drainage catalog for installation guidance, performance tables, and part submittals.