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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 Channel Materials
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    • Popular Manufacturers
      • TDS
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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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  • 5inch-cast-iron-grate-Janis-BooF2

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

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

    Regular price $223.08 USD
    Regular price Sale price $223.08 USD
    Unit price /  per 
  • IA-INTER-0520-HP-BF Iron Age Interlaken Baked on Oil Finish

    Iron Age IA-INTER-0520-HP-BF 5" HP Interlaken Cast Iron Grates Class B | BoOF

    Iron Age IA-INTER-0520-HP-BF 5" HP Interlaken Cast Iron Grates Class B | BoOF

    Regular price $223.08 USD
    Regular price Sale price $223.08 USD
    Unit price /  per 
  • 5inch-cast-iron-grate-Minione-boof

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

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

    Regular price $223.08 USD
    Regular price Sale price $223.08 USD
    Unit price /  per 
  • IA-ARGO-0520 raw cast iron decorative grate

    Iron Age IA-ARGO-0520-HP Class B ADA Heel-Proof Argo Cast Iron 122mm x 500mm Grate - RAW

    Iron Age IA-ARGO-0520-HP Class B ADA Heel-Proof Argo Cast Iron 122mm x 500mm Grate - RAW

    Regular price $167.31 USD
    Regular price Sale price $167.31 USD
    Unit price /  per 
  • IA-JOE-0520-HP-Iron Age Regular Joe Heel Proof 4.8x19.6 grate - Raw

    Iron Age IA-JOE-0520-HP Class B Heel-Proof Regular Joe Cast Iron 122mm x 500mm Grate - RAW

    Iron Age IA-JOE-0520-HP Class B Heel-Proof Regular Joe Cast Iron 122mm x 500mm Grate - RAW

    Regular price $167.31 USD
    Regular price Sale price $167.31 USD
    Unit price /  per 
  • IA-ARGO-0520-BF BoOF cast iron decorative grate

    Iron Age IA-ARGO-0520-HP-BF AA5-20I21HP Class B Argo ADA/HP Cast Iron 122mmx500mm BoOF

    Iron Age IA-ARGO-0520-HP-BF AA5-20I21HP Class B Argo ADA/HP Cast Iron 122mmx500mm BoOF

    Regular price $223.08 USD
    Regular price Sale price $223.08 USD
    Unit price /  per 
  • IA-ANISE-0520-HP Raw Iron Age Grate

    Iron Age IA-ANISE-0520-HP Class B Cast Iron 5x20 Heel Proof ADA Compliant Grate - RAW

    Iron Age IA-ANISE-0520-HP Class B Cast Iron 5x20 Heel Proof ADA Compliant Grate - RAW

    Regular price $167.31 USD
    Regular price Sale price $167.31 USD
    Unit price /  per 
  • 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 $223.08 USD
    Regular price Sale price $223.08 USD
    Unit price /  per 
  • IA-JOE-0520 Iron Age Regular Joe 5x20" raw cast iron grate

    Iron Age IA-JOE-0520 Class B Regular Joe Cast Iron 122mm x 500mm Grate - RAW

    Iron Age IA-JOE-0520 Class B Regular Joe Cast Iron 122mm x 500mm Grate - RAW

    Regular price $167.31 USD
    Regular price Sale price $167.31 USD
    Unit price /  per 
  • 5inch-cast-iron-grate-Minione-raw

    Iron Age IA-MIN-0520 Class B Minnione Cast Iron 122mm x 500mm Grate - RAW

    Iron Age IA-MIN-0520 Class B Minnione Cast Iron 122mm x 500mm Grate - RAW

    Regular price $167.31 USD
    Regular price Sale price $167.31 USD
    Unit price /  per 
  • ULMA 436 Wedge Wire Stainless Steel 122mm x 1M Grate ADA Compliant - Class B

    ULMA 436 Wedge Wire Stainless Steel 122mm x 1M Grate ADA Compliant - Class B

    ULMA 436 Wedge Wire Stainless Steel 122mm x 1M Grate ADA Compliant - Class B

    Regular price $476.93 USD
    Regular price Sale price $476.93 USD
    Unit price /  per 
  • 5inch-cast-iron-grate-interlaken-2 IA-INTER-0520

    Iron Age IA-INTER-0520 Interlaken Cast Iron 122mm x 500mm Grates Class B - Raw

    Iron Age IA-INTER-0520 Interlaken Cast Iron 122mm x 500mm Grates Class B - Raw

    Regular price $167.31 USD
    Regular price Sale price $167.31 USD
    Unit price /  per 
  • IA-ANISE-0520-HP-BF BOOF Iron Age Grate

    Iron Age IA-ANISE-0520-HP-BF Class B Cast Iron 5x20 Heel Proof ADA Compliant Grate - BoOF

    Iron Age IA-ANISE-0520-HP-BF Class B Cast Iron 5x20 Heel Proof ADA Compliant Grate - BoOF

    Regular price $223.08 USD
    Regular price Sale price $223.08 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 
  • 410 GP100KCA new perforated galv. steel with tread grate

    ULMA 410 Class A Perforated w/Tread Galvanized Steel 122mm x 1M Grate

    ULMA 410 Class A Perforated w/Tread Galvanized Steel 122mm x 1M Grate

    Regular price $24.80 USD
    Regular price Sale price $24.80 USD
    Unit price /  per 
  • IA-JOE-0520-HP-BF Iron Age Regular Joe Heel Proof 4.8x19.6 grate - BoOF

    Iron Age IA-JOE-0520-HP-BF Class B HP Regular Joe Cast Iron 5x20 (Nominal) Grate - BoOF

    Iron Age IA-JOE-0520-HP-BF Class B HP Regular Joe Cast Iron 5x20 (Nominal) Grate - BoOF

    Regular price $223.08 USD
    Regular price Sale price $223.08 USD
    Unit price /  per 
  • Iron Age Paradise 5 inch grate

    Iron Age IA-PAR-0520-BF / PA5-20I21 Class B Paradise Cast Iron 122mm x 494mm Grate - RAW

    Iron Age IA-PAR-0520-BF / PA5-20I21 Class B Paradise Cast Iron 122mm x 494mm Grate - RAW

    Regular price $167.31 USD
    Regular price Sale price $167.31 USD
    Unit price /  per 
  • IA-CARB-0520-BF Iron Age Carbochon 5x20" Baked on Oil Finish cast iron

    Iron Age IA-CARB-0520-BF Class B Carbochon Cast Iron 122mm x 500mm Grates - BoOF

    Iron Age IA-CARB-0520-BF Class B Carbochon Cast Iron 122mm x 500mm Grates - BoOF

    Regular price $223.08 USD
    Regular price Sale price $223.08 USD
    Unit price /  per 
  • ULMA Stainless Steel Perforated Grate IP100KCA 440_IP100KCAM 441

    ULMA 440 / IP100KCA Class A Perforated w/Tread Stainless Steel 124mm x 1M Grate

    ULMA 440 / IP100KCA Class A Perforated w/Tread Stainless Steel 124mm x 1M Grate

    Regular price $138.42 USD
    Regular price Sale price $138.42 USD
    Unit price /  per 
  • IA-LOC-0520-BF Iron Age Locust 5 x 20 cast iron grate

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

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

    Regular price $223.08 USD
    Regular price Sale price $223.08 USD
    Unit price /  per 
  • Iron Age Paradise 5 inch grate BoOF

    Iron Age IA-PAR-0520-BF / PA5-20I21 Class B Paradise Cast Iron 122mm x 494mm Grate - BoOF

    Iron Age IA-PAR-0520-BF / PA5-20I21 Class B Paradise Cast Iron 122mm x 494mm Grate - BoOF

    Regular price $223.08 USD
    Regular price Sale price $223.08 USD
    Unit price /  per 
  • Iron Age 5 Inch Cast Iron Grate Greek Key BoOF

    Iron Age IA-GRK-0520-BF Class B Greek Key Cast Iron 122mm x 500mm Grate - BoOF

    Iron Age IA-GRK-0520-BF Class B Greek Key Cast Iron 122mm x 500mm Grate - BoOF

    Regular price $223.08 USD
    Regular price Sale price $223.08 USD
    Unit price /  per 
  • IA-BAY-0520-HP-BF Iron Age 5x20" Bay Pattern Heel Proof with Baked on Oil Finish

    Iron Age IA-BAY-0520-HP-BF Class B HP Mission Bay Cast Iron 5x20 (Nominal) Grate - BoOF

    Iron Age IA-BAY-0520-HP-BF Class B HP Mission Bay Cast Iron 5x20 (Nominal) Grate - BoOF

    Regular price $223.08 USD
    Regular price Sale price $223.08 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 $223.08 USD
    Regular price Sale price $223.08 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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