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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
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      • Pour in Place (Concrete)
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      • All Load Classes
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    • Popular Manufacturers
      • TDS
      • Bronze Age
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      • 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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  • ULMA Hydro Mini Plus with 461D Ductile Iron Slotted Class E 0.5M Grate

    ULMA HYDROPLUS Mini with Ductile Iron Slotted Grate (461D) Class E

    Sale

    ULMA HYDROPLUS Mini with Ductile Iron Slotted Grate (461D) Class E

    Regular price From $132.30 USD
    Regular price $163.25 USD Sale price From $132.30 USD
    Unit price /  per 
    Sale
  • NDS 3" Gray Mini Channel Kit with TDS Bronze Age Tardis Grate - Aluminum

    NDS 3" Gray Mini Channel Kit with TDS Bronze Age Tardis Grate - Aluminum

    NDS 3" Gray Mini Channel Kit with TDS Bronze Age Tardis Grate - Aluminum

    Regular price From $742.40 USD
    Regular price Sale price From $742.40 USD
    Unit price /  per 
  • 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 U100KX Drain Channel kit w/ Bronze Age™ Luna Grate-RAW

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

    Sale

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

    Regular price From $206.23 USD
    Regular price $240.15 USD Sale price From $206.23 USD
    Unit price /  per 
    Sale
  • M100K Minnione Iron Age cast iron deco raw grate polymer concrete galv edge ULMA channel

    ULMA M100K W/Iron Age Minnione Grate

    Sale

    ULMA M100K W/Iron Age Minnione Grate

    Regular price From $524.99 USD
    Regular price $565.30 USD Sale price From $524.99 USD
    Unit price /  per 
    Sale
  • Ulma Hydro Mini Plus 495

    ULMA HYDROPLUS Mini with 495/PNH100KCAM Slotted HP Grate Class A

    Sale

    ULMA HYDROPLUS Mini with 495/PNH100KCAM Slotted HP Grate Class A

    Regular price From $102.95 USD
    Regular price $125.50 USD Sale price From $102.95 USD
    Unit price /  per 
    Sale
  • TDS-4in-alum-grated-natural-finish-TDSdrains

    Bronze Age™ BA-SLOT-4D-A Class A Slotted Aluminum 4" Dia. Grate

    Bronze Age™ BA-SLOT-4D-A Class A Slotted Aluminum 4" Dia. Grate

    Regular price $91.00 USD
    Regular price Sale price $91.00 USD
    Unit price /  per 
  • NDS-Slim Channel Kit with TDS Bronze Age Natural Aluminum Slotted Grate

    NDS Slim Channel Series Kit with BA-SLOT-0212-A Slotted Aluminum Grate

    NDS Slim Channel Series Kit with BA-SLOT-0212-A Slotted Aluminum Grate

    Regular price From $701.38 USD
    Regular price Sale price From $701.38 USD
    Unit price /  per 
  • ULMA D100-460

    ULMA D100 Drain Channel w/460 Slotted Ductile Iron Grate - Class C

    Sale

    ULMA D100 Drain Channel w/460 Slotted Ductile Iron Grate - Class C

    Regular price From $297.03 USD
    Regular price $320.70 USD Sale price From $297.03 USD
    Unit price /  per 
    Sale
  • ULMA D100 with steel slotted 420 grates

    ULMA D100 Drain Channel w/420 Slotted Galvanized Grate - Class A

    Sale

    ULMA D100 Drain Channel w/420 Slotted Galvanized Grate - Class A

    Regular price From $258.72 USD
    Regular price $275.19 USD Sale price From $258.72 USD
    Unit price /  per 
    Sale
  • HYDROPLUS with Iron Age Carbochon BoOF Cast Iron

    ULMA HYDROPLUS with Iron Age IA-CARB-0520 Carbochon BoOF Cast Iron Grate Class B

    Sale

    ULMA HYDROPLUS with Iron Age IA-CARB-0520 Carbochon BoOF Cast Iron Grate Class B

    Regular price From $559.11 USD
    Regular price $583.04 USD Sale price From $559.11 USD
    Unit price /  per 
    Sale
  • ULMA U100KX with Stainless Steel Edge and Stainless Steel Mesh Grate

    ULMA U100KX Drainage Kit with Stainless Steel Mesh 432 Grate

    Sale

    ULMA U100KX Drainage Kit with Stainless Steel Mesh 432 Grate

    Regular price From $361.74 USD
    Regular price $465.09 USD Sale price From $361.74 USD
    Unit price /  per 
    Sale
  • ULMA drain channel with stainless steel edge and Iron Age Regular Joe grate

    ULMA U100KX Drain Channel w/ Iron Age Regular Joe Grate - RAW

    Sale

    ULMA U100KX Drain Channel w/ Iron Age Regular Joe Grate - RAW

    Regular price From $719.51 USD
    Regular price $815.39 USD Sale price From $719.51 USD
    Unit price /  per 
    Sale
  • ULMA Hydro Mini Plus with 406 Heelproof Galvanized Mesh Grate load class B

    ULMA HYDROPLUS Mini with Galvanized Mesh Heelproof Grate (406 / GEHX100KCB) Class B

    Sale

    ULMA HYDROPLUS Mini with Galvanized Mesh Heelproof Grate (406 / GEHX100KCB) Class B

    Regular price From $164.11 USD
    Regular price $204.14 USD Sale price From $164.11 USD
    Unit price /  per 
    Sale
  • ULMA HYDROPLUS with 480 ductile iron heel proof slotted grate

    ULMA HYDROPLUS Mini with Ductile Iron Slotted Grate (480) Class C

    Sale

    ULMA HYDROPLUS Mini with Ductile Iron Slotted Grate (480) Class C

    Regular price From $129.76 USD
    Regular price $159.97 USD Sale price From $129.76 USD
    Unit price /  per 
    Sale
  • New Image Coming Soon

    ULMA HYDROPLUS w/ 462G Ductile Iron Grate - Class D

    Sale

    ULMA HYDROPLUS w/ 462G Ductile Iron Grate - Class D

    Regular price From $158.10 USD
    Regular price $200.65 USD Sale price From $158.10 USD
    Unit price /  per 
    Sale
  • ULMA HYDRO PLUS with ULMA 410 Galvanized Steel Slotted Grate-Class A

    ULMA HYDROPLUS with 410 / GP100KCA Galvanized Perforated Tread Grate Class A

    Sale

    ULMA HYDROPLUS with 410 / GP100KCA Galvanized Perforated Tread Grate Class A

    Regular price From $103.15 USD
    Regular price $132.48 USD Sale price From $103.15 USD
    Unit price /  per 
    Sale
  • ULMA HYDRO PLUS with ULMA 495 ADA Heel proof Polypropylene Grey Grate-Class A

    ULMA HYDROPLUS with 495 / PNH100KCAM- Polypropylene ADA/HP Class A Gray Grate

    Sale

    ULMA HYDROPLUS with 495 / PNH100KCAM- Polypropylene ADA/HP Class A Gray Grate

    Regular price From $141.22 USD
    Regular price $178.94 USD Sale price From $141.22 USD
    Unit price /  per 
    Sale
  • ULMA HYDRO PLUS with Galvanized Slotted 420-Class A

    ULMA HYDROPLUS with 420 / GN100KCA Galvanized Slotted Grate Class A

    Sale

    ULMA HYDROPLUS with 420 / GN100KCA Galvanized Slotted Grate Class A

    Regular price From $112.01 USD
    Regular price $145.13 USD Sale price From $112.01 USD
    Unit price /  per 
    Sale
  • 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
  • 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 U100KX Kit

    ULMA U100K Drain Channel with Galvanized Edging w/o Grate

    Sale

    ULMA U100K Drain Channel with Galvanized Edging w/o Grate

    Regular price From $54.13 USD
    Regular price $69.59 USD Sale price From $54.13 USD
    Unit price /  per 
    Sale
  • ULMA D100_424 galvanized reinforced grate

    ULMA D100 Drain Channel w/ TDS 424 Slotted Reinforced Galvanized Grate - Class C

    Sale

    ULMA D100 Drain Channel w/ TDS 424 Slotted Reinforced Galvanized Grate - Class C

    Regular price From $295.00 USD
    Regular price $318.10 USD Sale price From $295.00 USD
    Unit price /  per 
    Sale
  • U100K-GreekKey-boof cast iron deco ironage grate polymer concrete channel ULMA galv edge

    ULMA U100KX Drain Channel w/ Iron Age Greek Key Grate - BoOF

    Sale

    ULMA U100KX Drain Channel w/ Iron Age Greek Key Grate - BoOF

    Regular price From $351.82 USD
    Regular price $385.74 USD Sale price From $351.82 USD
    Unit price /  per 
    Sale
  • 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 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

    $80.36 $62.50
  • 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 $26.22
  • LD100X-2 Locking Device for ULMA Grates

    LD100X-2 Locking Device for ULMA Grates

    $12.96 $10.08
Shop All

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