Skip to content
Top view of NDS 1811 black 18 x 18 inch square drainage grate in foam polyolefin showing square grid pattern.

NDS 1811 18 x 18 in Square Drain Grate, Black

Brand: NDS
Save 25%
$279.49
$209.62
SKU 1811

Notify me when back in stock

Introducing the NDS 1811 18 x 18 in square drain grate in black - a lightweight, corrosion-resistant grate engineered for pedestrian drainage applications. Molded from durable foam polyolefin with UV inhibitors, this grate resists fading, chemicals, and rust while remaining easy to handle and install.

  • Size: 18 x 18 inches; designed to fit 18" x 18" catch basin series (catch basin sold separately).
  • Material: Foam polyolefin with UV-stable formulation for long outdoor life.
  • Finish: Black color for discreet appearance in landscapes and hardscapes.
  • Performance: Chemical-resistant, rustproof, and maintenance-free for low upkeep.
  • Use: Ideal for patios, walkways, pool decks and landscaped areas; intended for pedestrian traffic.
  • Benefits: Lightweight design simplifies handling and replacement; reduces installation time.

This NDS grate collects and removes excess surface water to protect outdoor living spaces from pooling. It pairs with compatible 18" x 18" catch basins and a wide range of NDS drainage accessories. For detailed specifications and installation guidance, see the manufacturer's Drainage Catalog linked on the product page.

Reviews

Frequently Asked Questions

What size catch basin does this grate fit?
This grate fits standard 18 x 18 inch catch basin series (catch basin sold separately).
Is the NDS 1811 suitable for vehicle traffic?
No. It is intended for pedestrian areas and light foot traffic, not for vehicular loads.
How do I clean and maintain this foam polyolefin grate?
Rinse with water and mild detergent; remove debris periodically. Avoid harsh solvents to preserve the UV-stable finish.
What are the material and durability features of this grate?
Made from foam polyolefin with UV inhibitors; chemical-resistant, rustproof, and designed for low-maintenance outdoor use.