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Top-down view of NDS 1211 12-inch black square catch basin grate in HDPE, showing slotted pattern, flat profile, and 12×12 size.

NDS 1211 12 in Square Catch Basin Grate — Black HDPE

Brand: NDS
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$76.11
$57.09
SKU 1211
In Stock (60)

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Keep surface water moving with the NDS 1211 12 in square catch basin grate. Molded from UV‑stabilized HDPE (polyolefin), this lightweight, rustproof grate snaps into 12 in catch basins, risers or low‑profile adapters to block debris while letting heavy flows pass through.

  • Designed for 12 × 12 catch basins: Fits NDS 12 in square catch basins, risers and low‑profile adapters for easy replacement or new installs.
  • Durable HDPE construction: UV‑stabilized polyolefin resists fading, cracking and most chemicals while remaining maintenance‑free.
  • High flow capacity: 50.76 sq‑in open area and approximately 155.28 GPM flow capacity to handle heavy runoff.
  • Load and compliance: Class B load rating and ADA‑compliant profile for light foot traffic and general residential applications.
  • Compact profile: Roughly 12 in × 12 in overall with a low 1‑1/8 in height and 3/8 in grate openings for efficient debris screening.

Install the 1211 grate to protect drain openings from leaves and large debris, reduce clogs and channel stormwater away from foundations, patios and landscaped areas. Its drop‑in design makes it quick to service and simple to remove for cleaning or inspection.

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Frequently Asked Questions

What catch basin does this grate fit?
The 1211 is made to fit NDS 12 in square catch basins, risers and low‑profile adapters.
How much stormwater can this grate handle?
With about 50.76 sq‑in open area the grate supports roughly 155 GPM flow capacity under typical conditions.
Is the grate resistant to sun and chemicals?
Yes — molded HDPE with UV stabilizers resists fading, cracking and common chemical exposure; it’s low‑maintenance.