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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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      • Fiberglass
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      • All Channel Materials
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      • TDS
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      • Zurn
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    • 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 495

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

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

    Regular price From $125.50 USD
    Regular price Sale price From $125.50 USD
    Unit price /  per 
  • ULMA HYDROPLUS Mini with IA-JANIS-0520 Iron Age Janis Grate Raw

    ULMA HYDROPLUS Mini w/ Iron Age 5" Janis Raw Cast Iron Grate | Class B

    ULMA HYDROPLUS Mini w/ Iron Age 5" Janis Raw Cast Iron Grate | Class B

    Regular price From $396.78 USD
    Regular price Sale price From $396.78 USD
    Unit price /  per 
  • ULMA Hydro Mini Plus H80 with IA-IA-JOE-0520 Iron Age Regular Joe Grate Class B

    ULMA HYDROPLUS Mini w/ Iron Age Regular Joe Raw Cast Iron Grate | Class B

    ULMA HYDROPLUS Mini w/ Iron Age Regular Joe Raw Cast Iron Grate | Class B

    Regular price From $389.00 USD
    Regular price Sale price From $389.00 USD
    Unit price /  per 
  • HYDROM-ANISE-0520-HP ULMA HYDROPLUS Anise 0520-Raw

    ULMA HYDROPLUS Mini w/ Iron Age IA-ANISE-0520-HP Anise Heel Proof Cast Iron Grate | Class B

    ULMA HYDROPLUS Mini w/ Iron Age IA-ANISE-0520-HP Anise Heel Proof Cast Iron Grate | Class B

    Regular price From $396.78 USD
    Regular price Sale price From $396.78 USD
    Unit price /  per 
  • ULMA HYDROPLUS Mini w/ PEDREDA Ductile Iron Grate Class C - BoOF

    ULMA HYDROPLUS Mini w/ PEDREDA Ductile Iron Grate Class C - BoOF

    ULMA HYDROPLUS Mini w/ PEDREDA Ductile Iron Grate Class C - BoOF

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  • ULMA HYDROPLUS Mini w/ FERN Ductile Iron Grate Class C - BoOF

    ULMA HYDROPLUS Mini w/ FERN Ductile Iron Grate Class C - BoOF

    ULMA HYDROPLUS Mini w/ FERN Ductile Iron Grate Class C - BoOF

    Request quote
  • ULMA HYDROPLUS Mini w/ CATHEDRAL Ductile Iron Grate Class C - BoOF

    ULMA HYDROPLUS Mini w/ CATHEDRAL Ductile Iron Grate Class C - BoOF

    ULMA HYDROPLUS Mini w/ CATHEDRAL Ductile Iron Grate Class C - BoOF

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  • ULMA HYDROPLUS Mini w/ BARS Ductile Iron Grate Class E - BoOF

    ULMA HYDROPLUS Mini w/ BARS Ductile Iron Grate Class E - BoOF

    ULMA HYDROPLUS Mini w/ BARS Ductile Iron Grate Class E - BoOF

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  • ULMA HYDROPLUS Mini w/ WAVE Ductile Iron Grate Class D - BoOF

    ULMA HYDROPLUS Mini w/ WAVE Ductile Iron Grate Class D - BoOF

    ULMA HYDROPLUS Mini w/ WAVE Ductile Iron Grate Class D - BoOF

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  • ULMA HYDROPLUS Mini w/ LUNA Ductile Iron Grate Class C - BoOF

    ULMA HYDROPLUS Mini w/ LUNA Ductile Iron Grate Class C - BoOF

    ULMA HYDROPLUS Mini w/ LUNA Ductile Iron Grate Class C - BoOF

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    ULMA HYDROPLUS w/ WAVE Ductile Iron Grate - Class C

    ULMA HYDROPLUS w/ WAVE Ductile Iron Grate - Class C

    Regular price From $291.86 USD
    Regular price Sale price From $291.86 USD
    Unit price /  per 
  • HYDROPLUS 5 inch Channel showing side outlet

    ULMA HYDROPLUS Channel 1M Section

    ULMA HYDROPLUS Channel 1M Section

    Regular price $20.00 USD
    Regular price Sale price $20.00 USD
    Unit price /  per 
  • HYDROPLUS with Iron Age Rain BOOF Grate

    ULMA HYDROPLUS with Iron Age RNN3-12I01HP / IA-RAIN-0520 Rain BoOF Cast Iron Grate Class B

    ULMA HYDROPLUS with Iron Age RNN3-12I01HP / IA-RAIN-0520 Rain BoOF Cast Iron Grate Class B

    Regular price From $486.92 USD
    Regular price Sale price From $486.92 USD
    Unit price /  per 
  • HYDROPLUS with Iron Age Minnione Raw Cast Iron

    ULMA HYDROPLUS w/ CLass B Iron Age MA5-20I21 / IA-MIN-0520 Minnione Raw Cast Iron Grate

    ULMA HYDROPLUS w/ CLass B Iron Age MA5-20I21 / IA-MIN-0520 Minnione Raw Cast Iron Grate

    Regular price From $451.48 USD
    Regular price Sale price From $451.48 USD
    Unit price /  per 
  • ULMA HYDROPLUS 90 Degree

    ULMA HYDROPLUS 90 Degree Corner Kit HYDRO-90

    ULMA HYDROPLUS 90 Degree Corner Kit HYDRO-90

    Regular price $145.24 USD
    Regular price Sale price $145.24 USD
    Unit price /  per 
  • HYDROPLUS with Iron Age Carbochon BoOF Cast Iron

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

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

    Regular price From $563.02 USD
    Regular price Sale price From $563.02 USD
    Unit price /  per 
  • ULMA HYDRO PLUS with IA-ARGO-0520-HP Iron Age Argo Heelproof Grate-Class B

    ULMA HYDROPLUS w/ Iron Age IA-ARGO-0520-HP Argo Heel Proof Raw Cast Iron Grate Class B

    ULMA HYDROPLUS w/ Iron Age IA-ARGO-0520-HP Argo Heel Proof Raw Cast Iron Grate Class B

    Regular price From $451.48 USD
    Regular price Sale price From $451.48 USD
    Unit price /  per 
  • HYDROPLUS 90 Degree with channels

    ULMA HYDROPLUS Corner Tee Kit | HYDRO-TEE

    ULMA HYDROPLUS Corner Tee Kit | HYDRO-TEE

    Regular price $122.58 USD
    Regular price Sale price $122.58 USD
    Unit price /  per 
  • ULMA HYDROPLUS HYDRO-OE front open end cap

    HYDRO-OE End Outlet for HYDROPLUS Driveway Drain - Black

    HYDRO-OE End Outlet for HYDROPLUS Driveway Drain - Black

    Regular price $28.28 USD
    Regular price Sale price $28.28 USD
    Unit price /  per 
  • Hydro Plus with Iron Age Locust Cast Iron Grate IA-LOC-0520 Class B

    ULMA HYDROPLUS w/ IA-LOC-0520 / IA-LOC-0520 Iron Age Locust Cast Iron Raw Grate Class B

    ULMA HYDROPLUS w/ IA-LOC-0520 / IA-LOC-0520 Iron Age Locust Cast Iron Raw Grate Class B

    Regular price From $451.48 USD
    Regular price Sale price From $451.48 USD
    Unit price /  per 
  • HYDROPLUS with Iron Age Rain Raw Grate

    ULMA HYDROPLUS with Iron Age RNN3-12I01HP / IA-RAIN-0520 Rain Raw Cast Iron Grate Class B

    ULMA HYDROPLUS with Iron Age RNN3-12I01HP / IA-RAIN-0520 Rain Raw Cast Iron Grate Class B

    Regular price From $375.38 USD
    Regular price Sale price From $375.38 USD
    Unit price /  per 
  • ULMA HYDROPLUS w/ BARS Ductile Iron Grate - Class E

    ULMA HYDROPLUS w/ BARS Ductile Iron Grate - Class E

    ULMA HYDROPLUS w/ BARS Ductile Iron Grate - Class E

    Regular price From $291.86 USD
    Regular price Sale price From $291.86 USD
    Unit price /  per 
  • 497 PE100KCBM_ADA Mesh Polypropylene Grate

    ULMA 497 / PE100KCBM Class B ADA Compliant Mesh HDPE 123mm x 500mm Grate

    ULMA 497 / PE100KCBM Class B ADA Compliant Mesh HDPE 123mm x 500mm Grate

    Regular price $43.83 USD
    Regular price Sale price $43.83 USD
    Unit price /  per 
  • ULMA HYDROPLUS w/ FERN Ductile Iron Grate - Class C

    ULMA HYDROPLUS w/ FERN Ductile Iron Grate - Class C

    ULMA HYDROPLUS w/ FERN Ductile Iron Grate - Class C

    Regular price From $291.86 USD
    Regular price Sale price From $291.86 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
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    Feb 02, 2024
  • TDS Bronze Age™ Collection

    Oct 31, 2023

On Sale

  • ULMA HYDROPLUS Mini w/ BARS Ductile Iron Grate Class C

    ULMA HYDROPLUS Mini w/ BARS Ductile Iron Grate Class C

    $237.16 $183.00
  • ULMA HYDROPLUS Mini w/ FERN Ductile Iron Grate Class C

    ULMA HYDROPLUS Mini w/ FERN Ductile Iron Grate Class C

    $237.16 $183.00
  • ULMA HYDROPLUS Mini w/ CATHEDRAL Ductile Iron Grate Class C

    ULMA HYDROPLUS Mini w/ CATHEDRAL Ductile Iron Grate Class C

    $237.16 $183.00
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