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18" Catch Basin Grates a proven alternative to traditional concrete drains. The NDS 1813 Heavy Duty Cast Iron grate is recommended for heavy duty pneumatic tire fork lifts and tractor trailers at speeds less than 20 m.p.h., maintenance-free, and easy to install. 18" Catch Basin Grate is used to helping to collect and remove excess water from driveways, commercial lots, and any other outdoor areas, designed for maximum durability.

  • Cast Iron
  • H-20 Rated
  • Grate Opening: 1" x 3"
  • Open Surface Area: 100.63 Sq. Inches
  • Grate Opening: 7/16”
  • ADA Compliant
  • 478.92 GPM
  • Class C Load Rated (175-325 PSI)
  • Designed For 18" Catch Basins
  • Product Class: 10ND

Heavy Duty Cast Iron Grate.
Open surface area approx. 100.50 square inches.
339 GPM.
H-20 Load Rating.
Fits 18x18 Catch Basins

Catalog & Brochures

Drainage Catalog


How do I choose the right size catch basin for my drainage system?
S5 Sustainable stormwater Solutions
Drainage Systems for Landscape and Yard: Using Catch Basins to Capture Run-off
S5 Intro
How do I prevent water from puddling in my planter area? NDS Yard Drainage Systems

Technical Information

Specifications Sheets: NDS Catch Basin Flow Capacities
Specifications Sheets: NDS Catch Basin Invert Table
Specifications Sheets: NDS Channel Drain Grate Flow Capacities Table