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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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    • Popular Manufacturers
      • TDS
      • Bronze Age
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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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  • Mearin-100-locking-device-CI-1024x768

    MEArin 141460 Hold-Down Device for MEArin100 Series Cast Iron Grate

    MEArin 141460 Hold-Down Device for MEArin100 Series Cast Iron Grate

    Regular price $8.06 USD
    Regular price Sale price $8.06 USD
    Unit price /  per 
  • New Image Coming Soon

    MEArin 141460-U Hold-Down Device for MEArin100 Series with Cast Iron Grate

    MEArin 141460-U Hold-Down Device for MEArin100 Series with Cast Iron Grate

    Regular price $7.24 USD
    Regular price Sale price $7.24 USD
    Unit price /  per 
  • TDS 461D Universal Ductile Iron Grate

    TDS 461D Class E Slotted Ductile Iron 122mm x 500mm Grate

    TDS 461D Class E Slotted Ductile Iron 122mm x 500mm Grate

    Regular price $50.54 USD
    Regular price Sale price $50.54 USD
    Unit price /  per 
  • IA-RAIN-0520-HP-BF

    Iron Age IA-RAIN-0520-HP-BF Class B Heel-Proof Rain Cast Iron 122mm x 500mm Grate - BoOF

    Iron Age IA-RAIN-0520-HP-BF Class B Heel-Proof Rain Cast Iron 122mm x 500mm Grate - BoOF

    Regular price $189.62 USD
    Regular price Sale price $189.62 USD
    Unit price /  per 
  • LC438S516F locking device

    MEArin 141465 Hold-Down Device for 100 Series Galvanized Grate

    MEArin 141465 Hold-Down Device for 100 Series Galvanized Grate

    Regular price $8.06 USD
    Regular price Sale price $8.06 USD
    Unit price /  per 
  • Mearin-100-locking-device-CI-1024x768

    MEArin 152116 Hold-Down Device for 100 Series Galvanized Slotted Grates

    MEArin 152116 Hold-Down Device for 100 Series Galvanized Slotted Grates

    Regular price $5.18 USD
    Regular price Sale price $5.18 USD
    Unit price /  per 
  • IA-RAIN-0520-HP

    Iron Age IA-RAIN-0520-HP Class B Heel-Proof Rain Cast Iron 122mm x 500mm Grate - RAW

    Iron Age IA-RAIN-0520-HP Class B Heel-Proof Rain Cast Iron 122mm x 500mm Grate - RAW

    Regular price $133.85 USD
    Regular price Sale price $133.85 USD
    Unit price /  per 
  • LC438G516 ABT Replacement Lock Bar-interior

    Replacement Galvanized Lock Bar for ABT and MEArin - LC438G516

    Replacement Galvanized Lock Bar for ABT and MEArin - LC438G516

    Regular price $2.54 USD
    Regular price Sale price $2.54 USD
    Unit price /  per 
  • Gatic Cast Iron Slotted Grate - Top View

    TDS 462G Class D Slotted Ductile Iron Grate

    TDS 462G Class D Slotted Ductile Iron Grate

    Regular price $46.49 USD
    Regular price Sale price $46.49 USD
    Unit price /  per 
  • ULMA 437 ADA Compliant Wedge Wire 316 Stainless Steel 122mm x 0.5M Grate Class B

    ULMA 437 ADA Compliant Wedge Wire 316 Stainless Steel 122mm x 0.5M Grate Class B

    ULMA 437 ADA Compliant Wedge Wire 316 Stainless Steel 122mm x 0.5M Grate Class B

    Regular price $245.92 USD
    Regular price Sale price $245.92 USD
    Unit price /  per 
  • ULMA 402_403 GEX100KCB-Mesh Galvanized grate

    ULMA 402 / GEX100KCB Mesh Galvanized Grate 1M Class B

    ULMA 402 / GEX100KCB Mesh Galvanized Grate 1M Class B

    Regular price $100.67 USD
    Regular price Sale price $100.67 USD
    Unit price /  per 
  • ULMA 402_403 GEX100KCB-Mesh Galvanized grate

    ULMA 403 / GEX100KCBM Mesh Galvanized Grate 0.5M Class B

    ULMA 403 / GEX100KCBM Mesh Galvanized Grate 0.5M Class B

    Regular price $75.55 USD
    Regular price Sale price $75.55 USD
    Unit price /  per 
  • 494 PNH100KCAM black plastic slotted ulma grate

    ULMA 494 / PNH100KCAM Class A ADA/HP Slotted Polypropylene 123mm x 498mm Grate | Black

    ULMA 494 / PNH100KCAM Class A ADA/HP Slotted Polypropylene 123mm x 498mm Grate | Black

    Regular price $32.05 USD
    Regular price Sale price $32.05 USD
    Unit price /  per 
  • ULMA 406_407 GEHX100KCB-Mesh Heelproof Galvanized grate

    ULMA 407 / GEHX100KCBM Mesh Heelproof Galvanized Grate 0.5M Class B

    ULMA 407 / GEHX100KCBM Mesh Heelproof Galvanized Grate 0.5M Class B

    Regular price $89.98 USD
    Regular price Sale price $89.98 USD
    Unit price /  per 
  • ULMA 438 Grate - Stainless Steel Wedge Wire

    ULMA 439 Wedge Wire Reinforced 316L Stainless Steel Grate 122mm x 0.5M | Class C

    ULMA 439 Wedge Wire Reinforced 316L Stainless Steel Grate 122mm x 0.5M | Class C

    Regular price $324.00 USD
    Regular price Sale price $324.00 USD
    Unit price /  per 
  • IA-INTER-0520-HP Iron Age Interlaken Raw

    Iron Age IA-INTER-0520-HP 5" HP Interlaken Cast Iron Grates Class B - Raw

    Iron Age IA-INTER-0520-HP 5" HP Interlaken Cast Iron Grates Class B - Raw

    Regular price $167.31 USD
    Regular price Sale price $167.31 USD
    Unit price /  per 
  • ULMA 438 Grate - Stainless Steel Wedge Wire

    ULMA 438 Wedge Wire Reinforced 316L Stainless Steel 122mm x 1M Grate ADA Compliant | Class C

    ULMA 438 Wedge Wire Reinforced 316L Stainless Steel 122mm x 1M Grate ADA Compliant | Class C

    Regular price $604.80 USD
    Regular price Sale price $604.80 USD
    Unit price /  per 
  • 5inch-cast-iron-grate-carbochon-raw2-1024x768

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

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

    Regular price $167.31 USD
    Regular price Sale price $167.31 USD
    Unit price /  per 
  • 5inch-cast-iron-grate-Janis-raw2

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

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

    Regular price $167.31 USD
    Regular price Sale price $167.31 USD
    Unit price /  per 
  • 495 PNH100KCAM-gris gray plastic slotted grate Ulma

    ULMA 495 / PNH100KCAM-GRIS Class A ADA HP Slotted Gray Grate Polypropylene 123mmx498mm

    ULMA 495 / PNH100KCAM-GRIS Class A ADA HP Slotted Gray Grate Polypropylene 123mmx498mm

    Regular price $35.99 USD
    Regular price Sale price $35.99 USD
    Unit price /  per 
  • IA-JOE-0520-BF Iron Age Regular Joe 5x20" Baked on Oil Finish Grate

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

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

    Regular price $223.08 USD
    Regular price Sale price $223.08 USD
    Unit price /  per 
  • 5 inch Iron Age Mission Bay Heel Proof Cast Iron Grate

    Iron Age IA-BAY-0520-HP Class B Heel-Proof Mission Bay Cast Iron 122mm x 500mm Grate - RAW

    Iron Age IA-BAY-0520-HP Class B Heel-Proof Mission Bay 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-que-hp

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

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

    Regular price $167.31 USD
    Regular price Sale price $167.31 USD
    Unit price /  per 
  • IA-Inter-0520-BF Iron Age Interlaken 5x20" Cast Iron Baked on Oil Finish Grate

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

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