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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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      • 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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      • Ductile/Cast Iron
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  • ULMA HYDROPLUS Mini with IA-JANIS-0520-BF Iron Age Janis Grate BoOF

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

    Sale

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

    Regular price From $519.86 USD
    Regular price $528.34 USD Sale price From $519.86 USD
    Unit price /  per 
    Sale
  • DA0651TC Polycast debris basket

    POLYCAST DA0651TC Debris Basket Stainless Steel

    POLYCAST DA0651TC Debris Basket Stainless Steel

    Regular price $559.63 USD
    Regular price Sale price $559.63 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

    Sale

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

    Regular price $27.99 USD
    Regular price $35.99 USD Sale price $27.99 USD
    Unit price /  per 
    Sale
  • U100KM-Locust Cast Iron Deco Ironage raw grate polymer concrete galv edge ULMA channel

    ULMA U100K Drainage Kit with Iron Age Locust Grate | Natural

    Sale

    ULMA U100K Drainage Kit with Iron Age Locust Grate | Natural

    Regular price From $597.86 USD
    Regular price $658.98 USD Sale price From $597.86 USD
    Unit price /  per 
    Sale
  • 10in Micro Mesh-WYE Frame

    10" Fiberglass Kit w/ Micro Mesh ADA Compliant Grate and WYE Frame - Load Class A

    10" Fiberglass Kit w/ Micro Mesh ADA Compliant Grate and WYE Frame - Load Class A

    Regular price From $540.15 USD
    Regular price Sale price From $540.15 USD
    Unit price /  per 
  • ULMA HYDROPLUS Mini with IA-MIN-0520-BF Iron Age Minnione Grate BoOF

    ULMA HYDROPLUS Mini w/ Iron Age Minnione BoOF Cast Iron Grate | Class B

    Sale

    ULMA HYDROPLUS Mini w/ Iron Age Minnione BoOF Cast Iron Grate | Class B

    Regular price From $519.86 USD
    Regular price $528.34 USD Sale price From $519.86 USD
    Unit price /  per 
    Sale
  • ULMA HYDROPLUS Mini with IA-CARBO-0520-BF Iron Age Carbochon Grate BoOF

    HYDROPLUS Mini w/ Iron Age 5"x20" Carbochon BoOF Cast Iron Grate | Class B

    Sale

    HYDROPLUS Mini w/ Iron Age 5"x20" Carbochon BoOF Cast Iron Grate | Class B

    Regular price From $519.86 USD
    Regular price $528.34 USD Sale price From $519.86 USD
    Unit price /  per 
    Sale
  • POLYCAST®600 Series Kit w/ DG0655R Wedge Wire | Load Class C

    POLYCAST®600 Series Kit w/ DG0655R Wedge Wire | Load Class C

    POLYCAST®600 Series Kit w/ DG0655R Wedge Wire | Load Class C

    Regular price From $507.89 USD
    Regular price Sale price From $507.89 USD
    Unit price /  per 
  • NDS-mini-554Kit-TDSdrains

    NDS 3" Gray Mini Channel Kit with NDS Botanical Grate - Black

    NDS 3" Gray Mini Channel Kit with NDS Botanical Grate - Black

    Regular price From $94.73 USD
    Regular price Sale price From $94.73 USD
    Unit price /  per 
  • HYDRO MINI PLUS with Iron Age Mission Bay Heel Proof BoOF Grate IA-BAY00520-HP-BF

    ULMA HYDROPLUS Mini w/ Iron Age IA-BAY-0520-HP-BF Mission Bay HP BoOF Cast Iron Grate | Class B

    Sale

    ULMA HYDROPLUS Mini w/ Iron Age IA-BAY-0520-HP-BF Mission Bay HP BoOF Cast Iron Grate | Class B

    Regular price From $519.86 USD
    Regular price $528.34 USD Sale price From $519.86 USD
    Unit price /  per 
    Sale
  • 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

    Sale

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

    Regular price From $396.55 USD
    Regular price $403.30 USD Sale price From $396.55 USD
    Unit price /  per 
    Sale
  • New Image Coming Soon

    ULMA D100 Drain Channel w/465 Slotted Ductile Iron Grate - Class B

    Sale

    ULMA D100 Drain Channel w/465 Slotted Ductile Iron Grate - Class B

    Regular price From $288.64 USD
    Regular price $309.92 USD Sale price From $288.64 USD
    Unit price /  per 
    Sale
  • NDS-Dura-XX-602K-TDSdrains cast iron diamond grate HPDE channel NDS

    NDS® Dura Slope Kit with DS-602 Cast Iron Diamond Grate - RAW

    NDS® Dura Slope Kit with DS-602 Cast Iron Diamond Grate - RAW

    Regular price From $539.77 USD
    Regular price Sale price From $539.77 USD
    Unit price /  per 
  • SS600 WITH DG0631 STAINLESS SLOTTED GRATE

    SS600 Stainless Steel Drain Kit w/ DG0631 Slotted 304 Stainless Steel Grate | Class A

    SS600 Stainless Steel Drain Kit w/ DG0631 Slotted 304 Stainless Steel Grate | Class A

    Regular price From $1,452.34 USD
    Regular price Sale price From $1,452.34 USD
    Unit price /  per 
  • NDS 18" Catch Basin Kit with NDS Slotted Grate | Green

    NDS 18" Catch Basin Kit with NDS Slotted Grate | Green

    NDS 18" Catch Basin Kit with NDS Slotted Grate | Green

    Regular price From $586.79 USD
    Regular price Sale price From $586.79 USD
    Unit price /  per 
  • MCKS-TDS571-TDSdrains Sand Mini Channel with Aluminum Cathedral Grate

    NDS 3" Sand Mini Channel Kit with TDS Bronze Age Cathedral Grate - Aluminum

    NDS 3" Sand Mini Channel Kit with TDS Bronze Age Cathedral Grate - Aluminum

    Regular price From $336.47 USD
    Regular price Sale price From $336.47 USD
    Unit price /  per 
  • ULMA HYDROPLUS MINI with 438 Grate-Stainless Steel Wedge Wire

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

    Sale

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

    Regular price From $517.36 USD
    Regular price $658.32 USD Sale price From $517.36 USD
    Unit price /  per 
    Sale
  • Aluminum Slotted Grate with 3" NDS Mini Channel MCKS-TDS561-TDSdrains

    NDS 3" Sand Mini Channel Kit with TDS Bronze Age Slotted Grate -Aluminum

    NDS 3" Sand Mini Channel Kit with TDS Bronze Age Slotted Grate -Aluminum

    Regular price From $336.47 USD
    Regular price Sale price From $336.47 USD
    Unit price /  per 
  • Hydro Plus with 486 Vinylester .9 inch center 1M Grate Class B

    ULMA HYDROPLUS with (486) Vinyl Ester FRP (0.9" on center) 1M Grates Class B

    Sale

    ULMA HYDROPLUS with (486) Vinyl Ester FRP (0.9" on center) 1M Grates Class B

    Regular price From $242.81 USD
    Regular price $309.57 USD Sale price From $242.81 USD
    Unit price /  per 
    Sale
  • HYDROPLUS with Iron Age Minnione BoOF Cast Iron

    ULMA HYDROPLUS with Iron Age IA-MIN-0520 Minnione BoOF Cast Iron Grate Class B

    Sale

    ULMA HYDROPLUS with Iron Age IA-MIN-0520 Minnione BoOF Cast Iron Grate Class B

    Regular price From $559.11 USD
    Regular price $583.04 USD Sale price From $559.11 USD
    Unit price /  per 
    Sale
  • Hydro Plus with 488 Vinylester .6 inch center 1M Grate Class C

    ULMA HYDROPLUS with (488) Vinyl Ester FRP (0.6" on center) 1M Grates Class C

    Sale

    ULMA HYDROPLUS with (488) Vinyl Ester FRP (0.6" on center) 1M Grates Class C

    Regular price From $331.70 USD
    Regular price $423.85 USD Sale price From $331.70 USD
    Unit price /  per 
    Sale
  • ULMA HYDROPLUS w/ LUNA Ductile Iron Grate - Class C

    ULMA HYDROPLUS w/ LUNA Ductile Iron Grate - Class C

    Sale

    ULMA HYDROPLUS w/ LUNA Ductile Iron Grate - Class C

    Regular price From $267.93 USD
    Regular price $291.86 USD Sale price From $267.93 USD
    Unit price /  per 
    Sale
  • ULMA HYDRO PLUS with IA-JOE-0520-BF Iron Age Regular Joe BoOF Grate Class B

    ULMA HYDROPLUS with Iron Age RJA5-20I21 / IA-JOE-0520 Regular Joe Raw Cast Iron Grate Class B

    Sale

    ULMA HYDROPLUS with Iron Age RJA5-20I21 / IA-JOE-0520 Regular Joe Raw Cast Iron Grate Class B

    Regular price From $434.71 USD
    Regular price $456.60 USD Sale price From $434.71 USD
    Unit price /  per 
    Sale
  • 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

    Sale

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

    Regular price From $441.85 USD
    Regular price $465.78 USD Sale price From $441.85 USD
    Unit price /  per 
    Sale
  • HYDROPLUS with Iron Age Oblio Raw Cast Iron

    ULMA HYDROPLUS with Iron Age OA5-20I21 / IA-OBLIO-0520 Oblio Raw Cast Iron Grate Class B

    Sale

    ULMA HYDROPLUS with Iron Age OA5-20I21 / IA-OBLIO-0520 Oblio Raw Cast Iron Grate Class B

    Regular price From $441.85 USD
    Regular price $465.78 USD Sale price From $441.85 USD
    Unit price /  per 
    Sale
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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 424 / GN100KCC, Class C, Slotted Reinforced Galvanized Steel 124mm x 1M Grate

    ULMA 424 / GN100KCC, Class C, Slotted Reinforced Galvanized Steel 124mm x 1M Grate

    $80.36 $62.50
  • ULMA 420 / GN100KCA, Class A, Slotted Galvanized Steel 122mm x 1M Grate

    ULMA 420 / GN100KCA, Class A, Slotted Galvanized Steel 122mm x 1M Grate

    $37.45 $26.22
  • LD100X-2 Locking Device for ULMA Grates

    LD100X-2 Locking Device for ULMA Grates

    $12.96 $10.08
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