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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
      • Stainless Steel
      • Pour in Place (Concrete)
      • All Channel Materials
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      • Load Class A
      • Load Class B
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      • Load Class D
      • Load Class E
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      • All Load Classes
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    • Popular Manufacturers
      • TDS
      • Bronze Age
      • NDS
      • Polycast
      • Polylok
      • ULMA
      • Zurn
      • 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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  • nds819-white-grate pro series 5

    NDS 819 Class B ADA Compliant Light Traffic HDPE 5" x 20" Grate - WHITE

    NDS 819 Class B ADA Compliant Light Traffic HDPE 5" x 20" Grate - WHITE

    Regular price $65.05 USD
    Regular price Sale price $65.05 USD
    Unit price /  per 
  • HYDROPLUS with 497 ADA Mesh Polypropylene Grate Class B

    ULMA HYDROPLUS w/ 497 / PE100KCBM Polypropylene ADA Mesh Grate Load Class B - BLACK

    Sale

    ULMA HYDROPLUS w/ 497 / PE100KCBM Polypropylene ADA Mesh Grate Load Class B - BLACK

    Regular price From $153.41 USD
    Regular price $194.62 USD Sale price From $153.41 USD
    Unit price /  per 
    Sale
  • NDS 1200DSG Downspout Defender

    900DSG Downspout Defender™ Grate 9" x 9"

    900DSG Downspout Defender™ Grate 9" x 9"

    Regular price $59.03 USD
    Regular price Sale price $59.03 USD
    Unit price /  per 
  • NDS 542 - Box of 16 - Class B ADA Compliant Slotted HDPE 3" x 36" Grate - GREEN

    NDS 542 - Box of 16 - Class B ADA Compliant Slotted HDPE 3" x 36" Grate - GREEN

    NDS 542 - Box of 16 - Class B ADA Compliant Slotted HDPE 3" x 36" Grate - GREEN

    Regular price $780.78 USD
    Regular price Sale price $780.78 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 
  • FG-T1215-1548 T-Bar Fiberglass Grate

    15" Fiberglass Heel Proof T-Bar Grate - Load Class A

    15" Fiberglass Heel Proof T-Bar Grate - Load Class A

    Regular price $366.50 USD
    Regular price Sale price $366.50 USD
    Unit price /  per 
  • NDS Pro Series 5 Slotted Brick Red Grate NDS 818

    NDS 818 Class B ADA Compliant Light Traffic HDPE 5" x 20" Grate - BRICK RED

    NDS 818 Class B ADA Compliant Light Traffic HDPE 5" x 20" Grate - BRICK RED

    Regular price $65.05 USD
    Regular price Sale price $65.05 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 
  • 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 
  • DG0667R Polycast Reinforced Stainless Steel Cover Grate

    POLYCAST DG0667R ADA Compliant Stainless Steel Solid 6" x 48" Cover Class C

    POLYCAST DG0667R ADA Compliant Stainless Steel Solid 6" x 48" Cover Class C

    Regular price $608.36 USD
    Regular price Sale price $608.36 USD
    Unit price /  per 
  • NDS-Dura-661LG-TDSdrains light gray slotted

    NDS® DS-661LG Class B ADA Compliant Slotted Polyolefin 6" x 24" Grate - LIGHT GRAY

    NDS® DS-661LG Class B ADA Compliant Slotted Polyolefin 6" x 24" Grate - LIGHT GRAY

    Regular price $110.59 USD
    Regular price Sale price $110.59 USD
    Unit price /  per 
  • 837_8inx20in_PedestrianTraffic-2671655952-O-L

    NDS 837 Class B Slotted Traffic Polyolefin Grate 8" x 20" (Nominal Dimensions)

    NDS 837 Class B Slotted Traffic Polyolefin Grate 8" x 20" (Nominal Dimensions)

    Regular price $188.53 USD
    Regular price Sale price $188.53 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 
  • SS600 stainless steel channel with DG0675 plastic transverse slotted grate

    SS600 Stainless Steel Drain Kit w/ DG0675 Black Transverse Slotted Grate | Class A

    SS600 Stainless Steel Drain Kit w/ DG0675 Black Transverse Slotted Grate | Class A

    Regular price From $1,374.18 USD
    Regular price Sale price From $1,374.18 USD
    Unit price /  per 
  • NDS 980 Black Plastic 9 inch Catch Basin Grate

    NDS 980 Class A ADA Compliant Slotted HDPE 9" x 9" Grate - BLACK

    NDS 980 Class A ADA Compliant Slotted HDPE 9" x 9" Grate - BLACK

    Regular price $67.73 USD
    Regular price Sale price $67.73 USD
    Unit price /  per 
  • nds814-lt-grey-grate pro series 5

    NDS 814 Class B ADA Light Traffic HDPE Grate 5" x 20" (Nominal) - LIGHT GRAY

    NDS 814 Class B ADA Light Traffic HDPE Grate 5" x 20" (Nominal) - LIGHT GRAY

    Regular price $61.19 USD
    Regular price Sale price $61.19 USD
    Unit price /  per 
  • RG-151224-AB

    RG-151224-AB Heavy Duty Ductile Iron Slotted 12″ x 24″ x 1.5″ Grate | TDS

    RG-151224-AB Heavy Duty Ductile Iron Slotted 12″ x 24″ x 1.5″ Grate | TDS

    Regular price $217.44 USD
    Regular price Sale price $217.44 USD
    Unit price /  per 
  • nds815-green-grate pro series 5

    NDS 815 Class B ADA Compliant Light Traffic HDPE 5" x 20" Grate - GREEN

    NDS 815 Class B ADA Compliant Light Traffic HDPE 5" x 20" Grate - GREEN

    Regular price $65.05 USD
    Regular price Sale price $65.05 USD
    Unit price /  per 
  • Polycast-DG0657-TDSdrains stainless perforated reinforced Polycast grate

    POLYCAST DG0657H ADA Perforated Stainless Steel 6" x 24" (Nominal) Grate Class B

    POLYCAST DG0657H ADA Perforated Stainless Steel 6" x 24" (Nominal) Grate Class B

    Regular price $195.96 USD
    Regular price Sale price $195.96 USD
    Unit price /  per 
  • MCK-555CI-BF

    NDS 3" Gray Mini Channel Kit with NDS Wave Grate - Baked on Oil Finish

    NDS 3" Gray Mini Channel Kit with NDS Wave Grate - Baked on Oil Finish

    Regular price From $338.70 USD
    Regular price Sale price From $338.70 USD
    Unit price /  per 
  • ULMA U100K with Galvanized Edge and Polypropylene Mesh Grate

    ULMA U100K Kit w/ ULMA 497 / PE100KCBM Polypropylene Mesh Grate

    Sale

    ULMA U100K Kit w/ ULMA 497 / PE100KCBM Polypropylene Mesh Grate

    Regular price From $316.56 USD
    Regular price $397.00 USD Sale price From $316.56 USD
    Unit price /  per 
    Sale
  • MCK-BA-SLOT-BF NDS Mini Channel in Grey with TDS Bronze Age BoOF Ductile Iron Slotted Grate

    NDS® 3" Gray Mini Channel Kit with TDS Bronze Age™ Slotted Grate - BoOF

    NDS® 3" Gray Mini Channel Kit with TDS Bronze Age™ Slotted Grate - BoOF

    Regular price From $252.29 USD
    Regular price Sale price From $252.29 USD
    Unit price /  per 
  • DG0675HD-polycast-duraguard-longit-slotted-grate-TDSdrains

    POLYCAST DG0675HD Class D HP ADA Transverse Slotted Ductile Iron 5.19" x 24" Grate

    POLYCAST DG0675HD Class D HP ADA Transverse Slotted Ductile Iron 5.19" x 24" Grate

    Regular price $80.46 USD
    Regular price Sale price $80.46 USD
    Unit price /  per 
  • NDS-Dura-Slope-DS-661-TDSdrains gray slotted

    NDS® DS-661 Class B ADA Compliant Slotted Polyolefin 6" x 24" Grate - DARK GRAY

    NDS® DS-661 Class B ADA Compliant Slotted Polyolefin 6" x 24" Grate - DARK GRAY

    Regular price $111.16 USD
    Regular price Sale price $111.16 USD
    Unit price /  per 
  • MCK-BA-SLOT-D NDS Mini Channel in Gray with TDS Bronze Age Grates in Ductile Iron Slot Grate

    NDS® 3" Gray Mini Channel Kit with TDS Bronze Age™ Slotted Grate - Ductile Iron

    NDS® 3" Gray Mini Channel Kit with TDS Bronze Age™ Slotted Grate - Ductile Iron

    Regular price From $177.29 USD
    Regular price Sale price From $177.29 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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