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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
      • Bronze Age
      • NDS
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      • Polylok
      • ULMA
      • Zurn
      • All Manufacturers
    • 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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      • Bronze
      • Ductile/Cast Iron
      • Fiberglass
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    ULMA HYDROPLUS with 414 / GP100KCC Reinforced Galvanized Perforated Grate Class C

    ULMA HYDROPLUS with 414 / GP100KCC Reinforced Galvanized Perforated Grate Class C

    Regular price From $227.60 USD
    Regular price Sale price From $227.60 USD
    Unit price /  per 
  • ULMA HYDRO PLUS with ULMA 495 ADA Heel proof Polypropylene Grey Grate-Class A

    ULMA HYDROPLUS with 495 / PNH100KCAM- Polypropylene ADA/HP Class A Gray Grate

    ULMA HYDROPLUS with 495 / PNH100KCAM- Polypropylene ADA/HP Class A Gray Grate

    Regular price From $178.94 USD
    Regular price Sale price From $178.94 USD
    Unit price /  per 
  • ULMA HYDROPLUS with 436 Stainless Steel Wedge Wire Grate Class B

    ULMA HYDROPLUS with Stainless Steel Wedge Wire (436) Grate Class B

    ULMA HYDROPLUS with Stainless Steel Wedge Wire (436) Grate Class B

    Regular price From $583.89 USD
    Regular price Sale price From $583.89 USD
    Unit price /  per 
  • LD100X-5 locking device

    LD100X-5 Locking Device for ULMA Grates

    LD100X-5 Locking Device for ULMA Grates

    Regular price $46.13 USD
    Regular price Sale price $46.13 USD
    Unit price /  per 
  • Hydro Plus with 440 IP100KCA Stainless Steel Perforated Grate Class A

    ULMA HYDROPLUS with 440 / IP100KCA Stainless Steel Perforated Grate Class A

    ULMA HYDROPLUS with 440 / IP100KCA Stainless Steel Perforated Grate Class A

    Regular price From $246.10 USD
    Regular price Sale price From $246.10 USD
    Unit price /  per 
  • HYDROPLUS - 438-SS Reinforced Wedge Wire Grate

    ULMA HYDROPLUS w/ (438) Stainless Steel Reinforced Wedge Wire Grate

    ULMA HYDROPLUS w/ (438) Stainless Steel Reinforced Wedge Wire Grate

    Regular price From $711.76 USD
    Regular price Sale price From $711.76 USD
    Unit price /  per 
  • ULMA HYDRO PLUS with ULMA 460 Ductile Iron Grate-Class C

    ULMA HYDROPLUS with 460 / FNX100KCCM Ductile Iron Slotted Grate Class C

    ULMA HYDROPLUS with 460 / FNX100KCCM Ductile Iron Slotted Grate Class C

    Regular price From $190.64 USD
    Regular price Sale price From $190.64 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 
  • Hydro Plus with 432 Stainless Steel Mesh Grate Class B

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

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

    Regular price From $575.68 USD
    Regular price Sale price From $575.68 USD
    Unit price /  per 
  • ULMA HYDRO PLUS with ULMA 424 Galvanized Reinforced Steel Slotted-Grate Class C

    ULMA HYDROPLUS with 424 / GN100KCC Reinforced Galvanized Slotted Grate Class C

    ULMA HYDROPLUS with 424 / GN100KCC Reinforced Galvanized Slotted Grate Class C

    Regular price From $184.21 USD
    Regular price Sale price From $184.21 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 
  • Bronze Age™ BA-LUNA-0520 Ductile Iron 5" x 20" Grate - RAW

    Bronze Age™ BA-LUNA-0520 Ductile Iron 5" x 20" Grate - RAW

    Bronze Age™ BA-LUNA-0520 Ductile Iron 5" x 20" Grate - RAW

    Regular price $87.50 USD
    Regular price Sale price $87.50 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 
  • 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 
  • 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 
  • 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 
  • BA-BARS-0520

    Bronze Age™ BA-BARS-0520 Ductile Iron 5" x 20" Grate - RAW

    Bronze Age™ BA-BARS-0520 Ductile Iron 5" x 20" Grate - RAW

    Regular price $87.50 USD
    Regular price Sale price $87.50 USD
    Unit price /  per 
  • ULMA 414 Class C Reinforced Perforated w/Tread Galvanized Steel 122mm x 1M Grate

    ULMA 414 Class C Reinforced Perforated w/Tread Galvanized Steel 122mm x 1M Grate

    ULMA 414 Class C Reinforced Perforated w/Tread Galvanized Steel 122mm x 1M Grate

    Regular price $119.92 USD
    Regular price Sale price $119.92 USD
    Unit price /  per 
  • Bronze Age™ BA-CATH-0520 Ductile Iron 5" x 20" Grate - RAW

    Bronze Age™ BA-CATH-0520 Ductile Iron 5" x 20" Grate - RAW

    Bronze Age™ BA-CATH-0520 Ductile Iron 5" x 20" Grate - RAW

    Regular price $87.50 USD
    Regular price Sale price $87.50 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 
  • 5inch-cast-iron-grate-RiverRock-raw2

    Iron Age IA-RIV-0520 Class B ADA Compliant River Rock Cast Iron 122mm x 500mm Grate - RAW

    Iron Age IA-RIV-0520 Class B ADA Compliant River Rock Cast Iron 122mm x 500mm Grate - RAW

    Regular price $167.31 USD
    Regular price Sale price $167.31 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 
  • 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 
  • LD100X-2 Locking Device for ULMA Grates

    LD100X-2 Locking Device for ULMA Grates

    LD100X-2 Locking Device for ULMA Grates

    Regular price $12.96 USD
    Regular price Sale price $12.96 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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