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Drainage Kits
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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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      • All Load Classes
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      • FP1200
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      • Polycast 600/700
      • Slim Channel
      • SS600
      • ULMA U100K(X)
      • All Drainage Systems
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  • Hydro Mini Plus with 488 Vinylester FRP .6 on center Grate Class C_1 Meter

    ULMA HYDROPLUS Mini with 488 Fiberglass bar grate - Load Class C

    Sale

    ULMA HYDROPLUS Mini with 488 Fiberglass bar grate - Load Class C

    Regular price From $307.15 USD
    Regular price $388.05 USD Sale price From $307.15 USD
    Unit price /  per 
    Sale
  • New Image Coming Soon

    ULMA D100 Drain Channel w/402 Mesh Galvanized Grate - Class B

    Sale

    ULMA D100 Drain Channel w/402 Mesh Galvanized Grate - Class B

    Regular price From $310.24 USD
    Regular price $337.69 USD Sale price From $310.24 USD
    Unit price /  per 
    Sale
  • U100K with Galvanized Heelproof 406

    ULMA U100K Drainage Kit with ULMA Heel-Proof 406 Mesh Grate | Galvanized

    Sale

    ULMA U100K Drainage Kit with ULMA Heel-Proof 406 Mesh Grate | Galvanized

    Regular price From $134.19 USD
    Regular price $172.54 USD Sale price From $134.19 USD
    Unit price /  per 
    Sale
  • ULMA U100KX Kit

    ULMA U100KX Drain Channel with Stainless Steel Edging w/o Grate

    Sale

    ULMA U100KX Drain Channel with Stainless Steel Edging w/o Grate

    Regular price From $105.08 USD
    Regular price $135.10 USD Sale price From $105.08 USD
    Unit price /  per 
    Sale
  • ULMA U100KX with 486 Vinyl Ester 0.9 FRP Grate

    ULMA U100KX Kit with TDS 486 Vinyl Ester Bar Center Grate 0.9" on Center - Class B

    Sale

    ULMA U100KX Kit with TDS 486 Vinyl Ester Bar Center Grate 0.9" on Center - Class B

    Regular price From $572.06 USD
    Regular price $725.51 USD Sale price From $572.06 USD
    Unit price /  per 
    Sale
  • U100KM-GN100KCA Galv. Steel Slotted class A grate polymer concrete galv edge ULMA channel

    ULMA U100K Drainage Kit with ULMA 420 Slotted Grate | Galvanized Load Class A

    Sale

    ULMA U100K Drainage Kit with ULMA 420 Slotted Grate | Galvanized Load Class A

    Regular price From $85.59 USD
    Regular price $110.04 USD Sale price From $85.59 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 
  • 486_Vinylester FRP 0.9 on center 1M Grate

    TDS 486 Vinyl-Ester Fiberglass Bar 122mm x 1M Bar Grate - 0.9" on Center - Class B

    Sale

    TDS 486 Vinyl-Ester Fiberglass Bar 122mm x 1M Bar Grate - 0.9" on Center - Class B

    Regular price $149.88 USD
    Regular price $192.71 USD Sale price $149.88 USD
    Unit price /  per 
    Sale
  • Iron Age 5x20 Oblio Cast Iron Grate - BoOF

    Iron Age IA-OBLIO-0520-BF Class B OBLIO Cast Iron 122mm x 500mm Grate - BoOF

    Iron Age IA-OBLIO-0520-BF Class B OBLIO Cast Iron 122mm x 500mm Grate - BoOF

    Regular price $233.09 USD
    Regular price Sale price $233.09 USD
    Unit price /  per 
  • MCKS-IA-QUE-HP-BF sand Mini Channel w/ BoOF Que grate

    NDS 3" Sand Mini Channel Kit with Iron Age QUE Cast Iron Grate - Baked on Oil Finish

    NDS 3" Sand Mini Channel Kit with Iron Age QUE Cast Iron Grate - Baked on Oil Finish

    Regular price From $833.17 USD
    Regular price Sale price From $833.17 USD
    Unit price /  per 
  • DK-4in-bronze-grated-satin-TDSdrains

    Bronze Age BA-SLOT-4D-B Class A Slotted Bronze Brushed Finish 4" Dia. Grate

    Bronze Age BA-SLOT-4D-B Class A Slotted Bronze Brushed Finish 4" Dia. Grate

    Regular price $152.50 USD
    Regular price Sale price $152.50 USD
    Unit price /  per 
  • ULMA MultiV200 678 - FNLHX200RGDEM Class E

    ULMA 678 Transverse Slotted HP Ductile Iron 9x20 Class E Grate - MultiV+200

    Sale

    ULMA 678 Transverse Slotted HP Ductile Iron 9x20 Class E Grate - MultiV+200

    Regular price $92.74 USD
    Regular price $119.23 USD Sale price $92.74 USD
    Unit price /  per 
    Sale
  • Hydro Plus Mini with 432 Stainless Steel Mesh Grate Class B

    ULMA HYDROPLUS Mini with Mesh Stainless Steel Grate (432 / IEX100KCB) Class B

    Sale

    ULMA HYDROPLUS Mini with Mesh Stainless Steel Grate (432 / IEX100KCB) Class B

    Regular price From $411.52 USD
    Regular price $522.24 USD Sale price From $411.52 USD
    Unit price /  per 
    Sale
  • U100K-Janis cast iron raw ironage grate polymer concrete ulma channel

    ULMA U100K Drainage Kit with Iron Age Janis Grate | Natural

    Sale

    ULMA U100K Drainage Kit with Iron Age Janis Grate | Natural

    Regular price From $597.86 USD
    Regular price $658.98 USD Sale price From $597.86 USD
    Unit price /  per 
    Sale
  • ULMA HYDROPLUS Mini w/ LUNA Ductile Iron Grate Class C

    ULMA HYDROPLUS Mini w/ LUNA Ductile Iron Grate Class C

    Sale

    ULMA HYDROPLUS Mini w/ LUNA Ductile Iron Grate Class C

    Regular price From $228.68 USD
    Regular price $237.16 USD Sale price From $228.68 USD
    Unit price /  per 
    Sale
  • Ulma U100KX Channel with Iron Age Regular Joe grate with Baked on Oil Finish

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

    Sale

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

    Regular price From $351.82 USD
    Regular price $385.74 USD Sale price From $351.82 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
  • IA-9x20in-CI-Oblio-Grate-boof-TDS Iron Age deco grate

    Iron Age IA-OBLIO-0920-BF Class B ADA Compliant OBLIO 9" x 20" Grate - BoOF

    Iron Age IA-OBLIO-0920-BF Class B ADA Compliant OBLIO 9" x 20" Grate - BoOF

    Regular price $388.96 USD
    Regular price Sale price $388.96 USD
    Unit price /  per 
  • IA-9x20in-CI-Oblio-Grate-TDSdrains Iron Age raw cast iron deco grate

    Iron Age IA-OBLIO-0920 Class B ADA Compliant OBLIO Ductile Iron 9" x 20" Grate - RAW

    Iron Age IA-OBLIO-0920 Class B ADA Compliant OBLIO Ductile Iron 9" x 20" Grate - RAW

    Regular price $308.88 USD
    Regular price Sale price $308.88 USD
    Unit price /  per 
  • 454 IN100KCC Reinforced Stainless Steel Slotted

    ULMA 455 / IN100KCCM Reinforced Stainless Steel Slotted Grate 0.5M Class C

    Sale

    ULMA 455 / IN100KCCM Reinforced Stainless Steel Slotted Grate 0.5M Class C

    Regular price $181.13 USD
    Regular price $232.88 USD Sale price $181.13 USD
    Unit price /  per 
    Sale
  • 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
  • U1KX-IA-QUE-HP

    ULMA U100KX Drain Channel w/ Iron Age Que Grate-RAW

    Sale

    ULMA U100KX Drain Channel w/ Iron Age Que Grate-RAW

    Regular price From $289.62 USD
    Regular price $322.52 USD Sale price From $289.62 USD
    Unit price /  per 
    Sale
  • NDS 24 inch Catch Basin with Irn Age Interlaken BoOF Cast Iron Grate

    NDS 18" Catch Basin Kit with Iron Age Interlaken Grate | Baked on Oil Finish

    NDS 18" Catch Basin Kit with Iron Age Interlaken Grate | Baked on Oil Finish

    Regular price From $1,100.05 USD
    Regular price Sale price From $1,100.05 USD
    Unit price /  per 
  • New Image Coming Soon

    ULMA D100 Drain Channel w/406 Mesh HP Galvanized Grate - Class B

    Sale

    ULMA D100 Drain Channel w/406 Mesh HP Galvanized Grate - Class B

    Regular price From $349.10 USD
    Regular price $387.65 USD Sale price From $349.10 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 $26.22
  • 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
  • LD100X-2 Locking Device for ULMA Grates

    LD100X-2 Locking Device for ULMA Grates

    $12.96 $10.08
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