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Top and side view of NDS 90S 6-inch sand atrium drain grate showing raised dome design, openings, and tan plastic material; installed over 6-inch Spee-D basin.

NDS 90S 6" Atrium Drain Grate - Sand Plastic, Fits 6" Pipe

Brand: NDS
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$30.46
$22.84
SKU 90S
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6" NDS 90S Atrium Grate in Sand plastic provides a raised-dome drain cover designed to keep leaves, mulch, and debris away from drain openings while allowing efficient water flow. Molded from UV‑stabilized high-density polyethylene (HDPE), this lightweight grate resists fading, cracking, chemicals, and rust for long-term outdoor performance.

  • Model: 90S — 6" Atrium Grate in Sand plastic (fits 6" systems)
  • Compatibility: Fits Spee‑D® Catch Basin Drain, 6" sewer & drain pipe and fittings, and 6" single-wall corrugated pipe
  • Material: UV‑stabilized HDPE — chemical resistant and maintenance-free
  • Performance: Open surface area 28.4 sq. in.; tested flow rate approximately 87 GPM
  • Dimensions: Grate height 5-3/4"; top diameter 3-7/8"; grate opening width ~1/4"
  • Benefits: Raised dome design captures debris at the base while allowing surface runoff to pass through; easy to install and remove for cleaning

Ideal for mulched landscape beds, natural areas, window wells, patios, and any location where surface debris can block flush grates. Use the 90S Atrium Grate to protect downstream pipe and catch basin systems from clogging and reduce routine maintenance. Refer to NDS technical documents for full installation details and flow/load tables.

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Frequently Asked Questions

What pipes and basins does the 90S atrium grate fit?
The 90S fits the Spee‑D® Catch Basin Drain, 6" sewer & drain pipe and fittings, and 6" single-wall corrugated pipe.
How does the atrium grate handle leaves and mulch?
The raised dome design traps leaves and mulch at the base while allowing surface water to flow through the top, reducing clogs.
Is the 90S material weather-resistant for outdoor use?
Yes. It’s molded from UV‑stabilized HDPE that resists fading, cracking, chemicals, and rust for long-term outdoor performance.

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