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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
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      • Pour in Place (Concrete)
      • All Channel Materials
    • Load Class
      • Load Class A
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      • Load Class D
      • Load Class E
      • Load Class F
      • All Load Classes
  • Grates
    • 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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      • Bronze
      • Ductile/Cast Iron
      • Fiberglass
      • Galvanized Steel
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      • Stainless Steel
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Products Blogs
  • ULMA HYDROPLUS - 480 Ductile Iron Heel Proof Slotted C250 0.5M

    ULMA HYDROPLUS with 480/FNHX100KCCM Ductile Iron Heel Proof Slotted Grate Class C

    Sale

    ULMA HYDROPLUS with 480/FNHX100KCCM Ductile Iron Heel Proof Slotted Grate Class C

    Regular price From $169.01 USD
    Regular price $214.67 USD Sale price From $169.01 USD
    Unit price /  per 
    Sale
  • GF-21429-ADA

    GF 21429 ADA Heavy-Duty Gray Iron Slotted 14" x 24" x 2" Grate | General Foundry

    GF 21429 ADA Heavy-Duty Gray Iron Slotted 14" x 24" x 2" Grate | General Foundry

    Regular price $169.40 USD
    Regular price Sale price $169.40 USD
    Unit price /  per 
  • 5inch-cast-iron-grate-RiverRock-boof

    Iron Age IA-RIV-0520-BF Class B ADA River Rock Cast Iron 122mm x 500mm Grate - BoOF

    Iron Age IA-RIV-0520-BF Class B ADA River Rock Cast Iron 122mm x 500mm Grate - BoOF

    Regular price $233.09 USD
    Regular price Sale price $233.09 USD
    Unit price /  per 
  • 5 inch Iron Age Mission Bay Heel Proof Cast Iron Grate

    Iron Age IA-BAY-0520-HP Class B Heel-Proof Mission Bay Cast Iron 122mm x 500mm Grate - RAW

    Iron Age IA-BAY-0520-HP Class B Heel-Proof Mission Bay Cast Iron 122mm x 500mm Grate - RAW

    Regular price $174.46 USD
    Regular price Sale price $174.46 USD
    Unit price /  per 
  • 5inch-cast-iron-grate-RiverRock-raw2

    Iron Age IA-RIV-0520 Class B ADA Compliant River Rock Cast Iron 122mm x 500mm Grate - RAW

    Iron Age IA-RIV-0520 Class B ADA Compliant River Rock Cast Iron 122mm x 500mm Grate - RAW

    Regular price $174.46 USD
    Regular price Sale price $174.46 USD
    Unit price /  per 
  • ULMA Stainless Steel Mesh Grate IEX100KCB 432_IEX100KCBM 433

    ULMA IEX100KCBM / 433 Class B Mesh Stainless Steel 124mm x 0.5M Grate

    Sale

    ULMA IEX100KCBM / 433 Class B Mesh Stainless Steel 124mm x 0.5M Grate

    Regular price $352.65 USD
    Regular price $317.39 USD Sale price $352.65 USD
    Unit price /  per 
    Sale
  • 5inch-cast-iron-que-hp-bk

    Iron Age IA-QUE-0520-HP-BF Class B Heel-Proof Cast Iron 122mm x 500mm Grate - BoOF

    Iron Age IA-QUE-0520-HP-BF Class B Heel-Proof Cast Iron 122mm x 500mm Grate - BoOF

    Regular price $233.09 USD
    Regular price Sale price $233.09 USD
    Unit price /  per 
  • ULMA Hydro Mini Plus H80 with ULMA 420 Galvanized Steel Slotted Grate Class A

    ULMA HYDROPLUS Mini with Galvanized Slotted Grate (420 / GN100KCA) Class A

    Sale

    ULMA HYDROPLUS Mini with Galvanized Slotted Grate (420 / GN100KCA) Class A

    Regular price From $73.18 USD
    Regular price $90.97 USD Sale price From $73.18 USD
    Unit price /  per 
    Sale
  • ULMA-M100KX

    ULMA M100K Neutral Shallow Channel - Galvanized Edge

    Sale

    ULMA M100K Neutral Shallow Channel - Galvanized Edge

    Regular price $117.45 USD
    Regular price $105.71 USD Sale price $117.45 USD
    Unit price /  per 
    Sale
  • ULMA U100KX Drain Channel kit w/Bronze Age™ CATHEDRAL Grate-RAW

    ULMA U100KX Drain Channel kit w/Bronze Age™ CATHEDRAL Grate-RAW

    Sale

    ULMA U100KX Drain Channel kit w/Bronze Age™ CATHEDRAL Grate-RAW

    Regular price From $206.23 USD
    Regular price $240.15 USD Sale price From $206.23 USD
    Unit price /  per 
    Sale
  • U100K-GreekKey-boof cast iron deco ironage grate polymer concrete channel ULMA galv edge

    ULMA U100K Drainage Kit with Iron Age Greek Key Grate | Baked on Oil Finish

    Sale

    ULMA U100K Drainage Kit with Iron Age Greek Key Grate | Baked on Oil Finish

    Regular price From $722.26 USD
    Regular price $785.42 USD Sale price From $722.26 USD
    Unit price /  per 
    Sale
  • U100KM-GreekKey Iron Age Cast Iron Deco Raw grate polymer concrete galv edge ULMA channel

    ULMA U100K Drainage Kit with Iron Age Greek Key Grate | Natual

    Sale

    ULMA U100K Drainage Kit with Iron Age Greek Key Grate | Natual

    Regular price From $597.86 USD
    Regular price $658.98 USD Sale price From $597.86 USD
    Unit price /  per 
    Sale
  • ULMA D100_0.9 Vinyl Ester FRP 486 Grate

    ULMA D100 Drain Channel w/486 Slotted Fiberglass Grate - Class B

    Sale

    ULMA D100 Drain Channel w/486 Slotted Fiberglass Grate - Class B

    Regular price From $433.98 USD
    Regular price $496.78 USD Sale price From $433.98 USD
    Unit price /  per 
    Sale
  • New Image Coming Soon

    ULMA D100 Drain Channel w/497 Black Mesh Plastic Grate - Class B

    Sale

    ULMA D100 Drain Channel w/497 Black Mesh Plastic Grate - Class B

    Regular price From $300.12 USD
    Regular price $324.68 USD Sale price From $300.12 USD
    Unit price /  per 
    Sale
  • Ulma LD-100X-3CB locking device drawing

    LD100X-3CB Locking Device for ULMA Grates

    Sale

    LD100X-3CB Locking Device for ULMA Grates

    Regular price $15.10 USD
    Regular price $13.59 USD Sale price $15.10 USD
    Unit price /  per 
    Sale
  • Hydro Plus with 454 Reinforced SS Slotted 1M Grate Class C

    ULMA HYDROPLUS with 454 Reinforced Stainless Steel Slotted Grate Class C

    Sale

    ULMA HYDROPLUS with 454 Reinforced Stainless Steel Slotted Grate Class C

    Regular price From $375.68 USD
    Regular price $480.39 USD Sale price From $375.68 USD
    Unit price /  per 
    Sale
  • ULMA drain channel with stainless steel edge and polypropylene grate

    ULMA U100K Kit with 494 / PNH100KCAM Polypropylene ADA Heel Proof Grate – BLACK

    Sale

    ULMA U100K Kit with 494 / PNH100KCAM Polypropylene ADA Heel Proof Grate – BLACK

    Regular price From $298.23 USD
    Regular price $373.44 USD Sale price From $298.23 USD
    Unit price /  per 
    Sale
  • TDS-BARS-0312-B Brushed Bronze Age Grates Transverse Slotted Grate

    Bronze Age BA-BARS-0312-B Bars Bronze Brushed 3" x 12" Grate

    Bronze Age BA-BARS-0312-B Bars Bronze Brushed 3" x 12" Grate

    Regular price $152.50 USD
    Regular price Sale price $152.50 USD
    Unit price /  per 
  • ULMA M100K polymer concrete galvanized edged channel with Mesh Polypropylene grate

    ULMA M100K Kit with 497 / PE100KCBM ADA Mesh Polypropylene Grate

    Sale

    ULMA M100K Kit with 497 / PE100KCBM ADA Mesh Polypropylene Grate

    Regular price From $237.53 USD
    Regular price $295.40 USD Sale price From $237.53 USD
    Unit price /  per 
    Sale
  • ULMA M100K_Galvanized Heel Proof 406

    M100K w/ Galv. Steel Heel-proof Mesh Grate (406)-ULMA

    Sale

    M100K w/ Galv. Steel Heel-proof Mesh Grate (406)-ULMA

    Regular price From $286.50 USD
    Regular price $358.36 USD Sale price From $286.50 USD
    Unit price /  per 
    Sale
  • ULMA M100KX Polymer Concrete Stainless Steel edged channel with 497 Mesh grate

    ULMA M100KX Kit with 497 / PE100KCBM Mesh Polypropylene Grate

    Sale

    ULMA M100KX Kit with 497 / PE100KCBM Mesh Polypropylene Grate

    Regular price From $313.31 USD
    Regular price $392.82 USD Sale price From $313.31 USD
    Unit price /  per 
    Sale
  • ULMA Hydro Mini Plus H80 with ULMA 460 Ductile Iron Grate Class C

    ULMA HYDROPLUS Mini with Ductile Iron Slotted Grate (460) Class C

    Sale

    ULMA HYDROPLUS Mini with Ductile Iron Slotted Grate (460) Class C

    Regular price From $111.07 USD
    Regular price $135.94 USD Sale price From $111.07 USD
    Unit price /  per 
    Sale
  • ULMA Hydro Mini Plus with ULMA 494 ADA Heel proof Polypropylene Black Grate Class A

    ULMA HYDROPLUS Mini with 494/PNH100KCAM Slotted HP Grate Class A

    Sale

    ULMA HYDROPLUS Mini with 494/PNH100KCAM Slotted HP Grate Class A

    Regular price From $96.81 USD
    Regular price $117.62 USD Sale price From $96.81 USD
    Unit price /  per 
    Sale
  • BA-BARS-0312-BF

    Bronze Age™ BA-BARS-0312-BF Ductile Iron 3" x 12" Grate -BoOF

    Bronze Age™ BA-BARS-0312-BF Ductile Iron 3" x 12" Grate -BoOF

    Regular price $64.95 USD
    Regular price Sale price $64.95 USD
    Unit price /  per 
  • Hydro Plus with 402 Galvanized Mesh Class B

    ULMA HYDROPLUS with 402 / GEX100KCB Galvanized Mesh Grate Class B

    Sale

    ULMA HYDROPLUS with 402 / GEX100KCB Galvanized Mesh Grate Class B

    Regular price From $163.53 USD
    Regular price $207.63 USD Sale price From $163.53 USD
    Unit price /  per 
    Sale
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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
Shop All

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shop@trenchdrain.com

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