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NDS 1811 18" x 18" Black Plastic Grate

SKU: 38294

Save 42% · Retail: $197.86

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About the NDS 1811

18" Square Structural Foam Polyethylene Grate with UV inhibitor

Product Details

Mpn # 1811
Weight 9.15 lbs.

Product Features

  • Open surface area - 104 square inches
  • 136 GPM flow rating


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Questions & Answers


Hi, there! Thank you for inquiring with us. This NDS 1811 plastic grate has 16-7/8in (L) x 16-7/8in (W) x 1in (H) dimensions. It is not exactly 18 inches but it is designed to fit the said catch basin and riser that have clearance for 16-7/8-inch grates. Please view the specification sheet under resources for additional information. Thank you and we hope to see you again here at!


Hello! Thank you for choosing to help you find answers to your plumbing questions. As of this moment, we weren't able to find the information that you need. We have emailed NDS regarding this 1811 drainage grate and hope to hear from them soon. Please check back in with us at a later time, or leave your e-mail address below so we can contact you as soon as we have the answer. Looking forward to seeing you here again at Enjoy your day!


Howdy! This NDS 1811 18" x 18" Black Plastic Grate is recommended for medium-duty pneumatic tire traffic, autos, and light trucks at a speed less than 20 mph. For more information, please check this Specification Sheet. If you're decided to purchase this NDS 1811, feel free to click the "Add to Cart" button, enter your zip code and you're good to go. Looking forward to seeing you here again at Have a fantastic day!

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