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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
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      • All Drainage Systems
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    • Popular Drainage Systems
      • Dura Slope
      • FP1200
      • Mini Channel
      • Polycast 600/700
      • Slim Channel
      • SS600
      • ULMA U100K(X)
      • All Drainage Systems
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  • ULMA HYDROPLUS Mini with Interlaken BoOF IA-Inter-0520-BF Class B

    HYDROPLUS Mini w/ Iron Age 5"x 20" Interlaken BoOF Cast Iron Grate | Class B

    HYDROPLUS Mini w/ Iron Age 5"x 20" Interlaken BoOF Cast Iron Grate | Class B

    Regular price From $500.54 USD
    Regular price Sale price From $500.54 USD
    Unit price /  per 
  • ULMA HYDROPLUS with Iron Age Que BoOF Finish Cast Iron Grate

    ULMA HYDROPLUS with Iron Age IA-QUE-0520-HP BoOF Que Heel Proof Cast Iron Grate Class B

    ULMA HYDROPLUS with Iron Age IA-QUE-0520-HP BoOF Que Heel Proof Cast Iron Grate Class B

    Regular price From $563.02 USD
    Regular price Sale price From $563.02 USD
    Unit price /  per 
  • New Image Coming Soon

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

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

    Regular price From $387.65 USD
    Regular price Sale price From $387.65 USD
    Unit price /  per 
  • ULMA U100KX Polymer Concrete Channel with Stainless Steel Edging and Wedge Wire Grate

    ULMA U100KX Kit with TDS 436 Stainless Steel Wedge Wire Grate

    ULMA U100KX Kit with TDS 436 Stainless Steel Wedge Wire Grate

    Regular price From $393.62 USD
    Regular price Sale price From $393.62 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 
  • ULMA HYDROPLUS Mini w/ PEDREDA Ductile Iron Grate Class C

    ULMA HYDROPLUS Mini w/ PEDREDA Ductile Iron Grate Class C

    Sale

    ULMA HYDROPLUS Mini w/ PEDREDA Ductile Iron Grate Class C

    Regular price From $183.00 USD
    Regular price $237.16 USD Sale price From $183.00 USD
    Unit price /  per 
    Sale
  • 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 
  • ULMA HYDROPLUS - Que Raw Finish Grate

    ULMA HYDROPLUS with Iron Age QUA5-20I21HP / IA-QUE-0520 Que Raw Cast Iron Grate Class B

    ULMA HYDROPLUS with Iron Age QUA5-20I21HP / IA-QUE-0520 Que Raw Cast Iron Grate Class B

    Regular price From $451.48 USD
    Regular price Sale price From $451.48 USD
    Unit price /  per 
  • NDS-Spee-D-BA-Cathedral SS grate

    NDS Spee-D® Channel w/ BA-CATH-0448-S Stainless Steel 4"x48" Cathedral Grate

    NDS Spee-D® Channel w/ BA-CATH-0448-S Stainless Steel 4"x48" Cathedral Grate

    Regular price From $246.46 USD
    Regular price Sale price From $246.46 USD
    Unit price /  per 
  • ULMA HYDRO PLUS with IA-RIV-0520 Iron Age River Rock Grate-Class B

    ULMA HYDROPLUS with Iron Age IA-RIV-0520 River Rock - RAW

    ULMA HYDROPLUS with Iron Age IA-RIV-0520 River Rock - RAW

    Regular price From $451.48 USD
    Regular price Sale price From $451.48 USD
    Unit price /  per 
  • ULMA D100_0.9 Vinyl Ester FRP 486 Grate

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

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

    Regular price From $564.72 USD
    Regular price Sale price From $564.72 USD
    Unit price /  per 
  • ULMA HYDROPLUS Mini w/ FERN Ductile Iron Grate Class C

    ULMA HYDROPLUS Mini w/ FERN Ductile Iron Grate Class C

    Sale

    ULMA HYDROPLUS Mini w/ FERN Ductile Iron Grate Class C

    Regular price From $183.00 USD
    Regular price $237.16 USD Sale price From $183.00 USD
    Unit price /  per 
    Sale
  • ULMA HYDROPLUS Mini w/ WAVE Ductile Iron Grate Class C

    ULMA HYDROPLUS Mini w/ WAVE Ductile Iron Grate Class C

    Sale

    ULMA HYDROPLUS Mini w/ WAVE Ductile Iron Grate Class C

    Regular price From $183.00 USD
    Regular price $237.16 USD Sale price From $183.00 USD
    Unit price /  per 
    Sale
  • ULMA HYDROPLUS Mini w/ BARS Ductile Iron Grate Class C

    ULMA HYDROPLUS Mini w/ BARS Ductile Iron Grate Class C

    Sale

    ULMA HYDROPLUS Mini w/ BARS Ductile Iron Grate Class C

    Regular price From $183.00 USD
    Regular price $237.16 USD Sale price From $183.00 USD
    Unit price /  per 
    Sale
  • ULMA HYDROPLUS w/ LUNA Ductile Iron Grate - Class C

    ULMA HYDROPLUS w/ LUNA Ductile Iron Grate - Class C

    ULMA HYDROPLUS w/ LUNA Ductile Iron Grate - Class C

    Regular price From $291.86 USD
    Regular price Sale price From $291.86 USD
    Unit price /  per 
  • TP0650S Catch basin with DG0692 Patriot ductile iron grate

    TP0650S (Shallow) Polymer Concrete Catch Basin Kit w/DG0692 for POLYCAST®

    TP0650S (Shallow) Polymer Concrete Catch Basin Kit w/DG0692 for POLYCAST®

    Regular price $355.05 USD
    Regular price Sale price $355.05 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 
  • Iron Age Cast Iron Paradise Raw Grate

    ULMA HYDROPLUS with Iron Age PA5-20I21 / IA-PAR-0520 Paradise Raw Cast Iron Grate Class B

    ULMA HYDROPLUS with Iron Age PA5-20I21 / IA-PAR-0520 Paradise Raw Cast Iron Grate Class B

    Regular price From $451.48 USD
    Regular price Sale price From $451.48 USD
    Unit price /  per 
  • 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 $183.00 USD
    Regular price $237.16 USD Sale price From $183.00 USD
    Unit price /  per 
    Sale
  • NDS-Spee-D-BA-Slotted Galv SS grate

    NDS Spee-D® Channel w/ BA-SLOT-0448 Galvanized Steel 4"x48" Transverse Slotted Grate

    NDS Spee-D® Channel w/ BA-SLOT-0448 Galvanized Steel 4"x48" Transverse Slotted Grate

    Regular price From $152.96 USD
    Regular price Sale price From $152.96 USD
    Unit price /  per 
  • ULMA Hydro Mini Plus H80 with IA-ARGO-0520-HP Iron Age Argo Heel proof Grate Class B

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

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

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

    ULMA HYDROPLUS w/ CATHEDRAL Ductile Iron Grate - Class C

    ULMA HYDROPLUS w/ CATHEDRAL Ductile Iron Grate - Class C

    Regular price From $291.86 USD
    Regular price Sale price From $291.86 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 
  • ULMA HYDROPLUS with Iron Age Oblio Heel Proof Cast Iron Raw Grate

    ULMA HYDROPLUS w/ IA-OBLIO-0520-HP Oblio Heel Proof Raw Cast Iron Grate Class B

    ULMA HYDROPLUS w/ IA-OBLIO-0520-HP Oblio 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 
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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 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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