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  • Drainage Kits
    • Popular Manufacturers
      • TDS
      • NDS
      • POLYCAST®
      • ULMA
      • Zurn
      • All Manufacturers
    • Popular Drainage Systems
      • Dura Slope
      • Mini Channel
      • Polycast 600/700
      • Slim Channel
      • SS600
      • ULMA U100K(X)
      • All Drainage Systems
    • Channel Materials
      • Fiberglass
      • Plastic
      • Polymer Concrete
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      • Pour in Place (Concrete)
      • All Channel Materials
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      • Load Class A
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      • All Load Classes
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      • TDS
      • Bronze Age
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      • All Manufacturers
    • Popular Drainage Systems
      • Dura Slope
      • FP1200
      • Mini Channel
      • Polycast 600/700
      • Slim Channel
      • SS600
      • ULMA U100K(X)
      • All Drainage Systems
    • Grate Material
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      • Ductile/Cast Iron
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Products Blogs
  • NDS 544 - Box of 16 - Class B ADA Compliant Slotted HDPE 3" x 36" Grate - SAND

    NDS 544 - Box of 16 - Class B ADA Compliant Slotted HDPE 3" x 36" Grate - SAND

    NDS 544 - Box of 16 - Class B ADA Compliant Slotted HDPE 3" x 36" Grate - SAND

    Regular price $780.78 USD
    Regular price Sale price $780.78 USD
    Unit price /  per 
  • nds817-sand-grate Pro Series 5

    NDS 817 Class B ADA Compliant Light Traffic HDPE 5" x 20" Grate - SAND

    NDS 817 Class B ADA Compliant Light Traffic HDPE 5" x 20" Grate - SAND

    Regular price $65.05 USD
    Regular price Sale price $65.05 USD
    Unit price /  per 
  • NDS-243-TDSdrains

    NDS 243 Class B ADA Compliant Slotted HDPE 4" x 24" Grate - BLACK

    NDS 243 Class B ADA Compliant Slotted HDPE 4" x 24" Grate - BLACK

    Regular price $64.06 USD
    Regular price Sale price $64.06 USD
    Unit price /  per 
  • FGK-MESH-EZ-08 Fiberglass Grate

    FG-MESH-0848 Mesh Fiberglass 8"X48"x1.5" Grate Load Class C

    FG-MESH-0848 Mesh Fiberglass 8"X48"x1.5" Grate Load Class C

    Regular price $212.56 USD
    Regular price Sale price $212.56 USD
    Unit price /  per 
  • nds542-green-slotted-grate-TDS

    NDS 542 Class B ADA Compliant Heel-Proof HDPE 3" x 36" Grate - GREEN

    NDS 542 Class B ADA Compliant Heel-Proof HDPE 3" x 36" Grate - GREEN

    Regular price $48.80 USD
    Regular price Sale price $48.80 USD
    Unit price /  per 
  • Polycast-DG0442-galv-steel-grate-4ft-TDSdrains

    POLYCAST DG0442 Class A Slotted Galvanized 5" x 48" Grate

    POLYCAST DG0442 Class A Slotted Galvanized 5" x 48" Grate

    Regular price $119.01 USD
    Regular price Sale price $119.01 USD
    Unit price /  per 
  • nds816-black-grate Pro Series 5

    NDS 816 Class B ADA Compliant Light Traffic HDPE 5" x 20" Grate - BLACK

    NDS 816 Class B ADA Compliant Light Traffic HDPE 5" x 20" Grate - BLACK

    Regular price $65.05 USD
    Regular price Sale price $65.05 USD
    Unit price /  per 
  • NDS-252-TDSdrains

    NDS 252 Class B ADA Compliant Heel-Proof Botanical HDPE 4" x 24" Grate - BLACK

    NDS 252 Class B ADA Compliant Heel-Proof Botanical HDPE 4" x 24" Grate - BLACK

    Regular price $92.37 USD
    Regular price Sale price $92.37 USD
    Unit price /  per 
  • NDS 981 Black HDPE 9" Atrium Grate

    NDS 981 Atrium HDPE 9" X 9" Grate - BLACK

    NDS 981 Atrium HDPE 9" X 9" Grate - BLACK

    Regular price $101.06 USD
    Regular price Sale price $101.06 USD
    Unit price /  per 
  • NDS 540 - Box of 16 - Class B ADA Compliant Slotted HDPE 3" x 36" Grate - WHITE

    NDS 540 - Box of 16 - Class B ADA Compliant Slotted HDPE 3" x 36" Grate - WHITE

    NDS 540 - Box of 16 - Class B ADA Compliant Slotted HDPE 3" x 36" Grate - WHITE

    Regular price $780.78 USD
    Regular price Sale price $780.78 USD
    Unit price /  per 
  • nds540-white-slotted-grate-TDS

    NDS 540 Class B ADA Compliant Heel-Proof HDPE 3" x 36" Grate - WHITE

    NDS 540 Class B ADA Compliant Heel-Proof HDPE 3" x 36" Grate - WHITE

    Regular price $48.80 USD
    Regular price Sale price $48.80 USD
    Unit price /  per 
  • NDS1218CI NDS Cast Iron Grate in Botanical

    NDS 1218CI Class B Botanical Cast Iron 12" x 12" Grate - RAW

    NDS 1218CI Class B Botanical Cast Iron 12" x 12" Grate - RAW

    Regular price $491.44 USD
    Regular price Sale price $491.44 USD
    Unit price /  per 
  • NDS861-90-deg pro series 5

    NDS 861 Pro Series 5 - 90 Degree Elbow

    NDS 861 Pro Series 5 - 90 Degree Elbow

    Regular price $194.02 USD
    Regular price Sale price $194.02 USD
    Unit price /  per 
  • NDS-Dura-Slope-DS-670-TDSdrains light gray perforated

    NDS DS-670 Class B ADA Compliant Perforated Polyolefin 6" x 24" Grate - LIGHT GRAY

    NDS DS-670 Class B ADA Compliant Perforated Polyolefin 6" x 24" Grate - LIGHT GRAY

    Regular price $111.16 USD
    Regular price Sale price $111.16 USD
    Unit price /  per 
  • NDS1210_Grey_NDS_Catch_Basin_Grate_12x12

    NDS 1210 Class B ADA Compliant Slotted HDPE 12" x 12" Grate - GRAY

    NDS 1210 Class B ADA Compliant Slotted HDPE 12" x 12" Grate - GRAY

    Regular price $116.10 USD
    Regular price Sale price $116.10 USD
    Unit price /  per 
  • NDS 1810 Grey HDPE 18" Slotted Catch Basin Grate

    NDS 1810 Class B ADA Compliant Slotted HDPE 18" x 18" Grate - GRAY

    NDS 1810 Class B ADA Compliant Slotted HDPE 18" x 18" Grate - GRAY

    Regular price $410.25 USD
    Regular price Sale price $410.25 USD
    Unit price /  per 
  • NDS 107CS Sewer Drain Cap

    NDS 107CS 6" Sewer Cap

    NDS 107CS 6" Sewer Cap

    Regular price $13.73 USD
    Regular price Sale price $13.73 USD
    Unit price /  per 
  • NDS-244-TDSdrains

    NDS 244 Class B ADA Compliant Slotted HDPE 4" x 24" Grate - SAND

    NDS 244 Class B ADA Compliant Slotted HDPE 4" x 24" Grate - SAND

    Regular price $55.49 USD
    Regular price Sale price $55.49 USD
    Unit price /  per 
  • NDS 555GY - Box of 16 - Class B ADA Compliant Wave Polyolefin 3" x 36" Grate - GRAY

    NDS 555GY - Box of 16 - Class B ADA Compliant Wave Polyolefin 3" x 36" Grate - GRAY

    NDS 555GY - Box of 16 - Class B ADA Compliant Wave Polyolefin 3" x 36" Grate - GRAY

    Regular price $994.56 USD
    Regular price Sale price $994.56 USD
    Unit price /  per 
  • NDS 991 Green HDPE 9" Atrium Grate

    NDS 991 Atrium HDPE 9" X 9" Grate - GREEN

    NDS 991 Atrium HDPE 9" X 9" Grate - GREEN

    Regular price $101.06 USD
    Regular price Sale price $101.06 USD
    Unit price /  per 
  • NDS242-green-slotted-grate Spee-D channel

    NDS 242 Class B ADA Compliant Slotted HDPE 4" x 24" Grate - GREEN

    NDS 242 Class B ADA Compliant Slotted HDPE 4" x 24" Grate - GREEN

    Regular price $64.06 USD
    Regular price Sale price $64.06 USD
    Unit price /  per 
  • NDS970 6inch diameter strium sand grate

    NDS090S Atrium HDPE 6" Dia. Grate - Sand

    NDS090S Atrium HDPE 6" Dia. Grate - Sand

    Regular price $40.23 USD
    Regular price Sale price $40.23 USD
    Unit price /  per 
  • NDS-253GR Green wave Spee-D

    NDS 555GR Class B ADA Compliant Wave Polyolefin 3" x 36" Grate - GREEN

    NDS 555GR Class B ADA Compliant Wave Polyolefin 3" x 36" Grate - GREEN

    Regular price $62.16 USD
    Regular price Sale price $62.16 USD
    Unit price /  per 
  • NDS-253-TDSdrains

    NDS 555 Class B ADA Compliant Wave Polyolefin 3" x 36" Grate - BLACK

    NDS 555 Class B ADA Compliant Wave Polyolefin 3" x 36" Grate - BLACK

    Regular price $62.16 USD
    Regular price Sale price $62.16 USD
    Unit price /  per 
  • BA-SLOT-0212-A Slim Channel Aluminum Natural Slotted Grate

    Bronze Age™ BA-SLOT-0212-A Class A Slotted Aluminum 2" x 12" Grate

    Bronze Age™ BA-SLOT-0212-A Class A Slotted Aluminum 2" x 12" Grate

    Regular price $91.00 USD
    Regular price Sale price $91.00 USD
    Unit price /  per 
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Resources

Shipping / Returns

Determining Your Grate Size

Load Class Chart

Installer Map

Drainage News

  • How Do You Clean Out a Trench Drain Without Damaging It?

    May 27, 2026
  • What is Load Class and Why Is It Important?

    Feb 23, 2024
  • Keeping Livestock Safe – Grate Ideas

    Feb 02, 2024
  • TDS Bronze Age™ Collection

    Oct 31, 2023

On Sale

  • ULMA 420 / GN100KCA, Class A, Slotted Galvanized Steel 122mm x 1M Grate

    ULMA 420 / GN100KCA, Class A, Slotted Galvanized Steel 122mm x 1M Grate

    $37.45
  • ULMA 424 / GN100KCC, Class C, Slotted Reinforced Galvanized Steel 124mm x 1M Grate

    ULMA 424 / GN100KCC, Class C, Slotted Reinforced Galvanized Steel 124mm x 1M Grate

    $89.29
  • LD100X-2 Locking Device for ULMA Grates

    LD100X-2 Locking Device for ULMA Grates

    $14.40
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