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Drainage Kits
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    • Popular Manufacturers
      • TDS
      • NDS
      • POLYCAST®
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      • Zurn
      • All Manufacturers
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      • Dura Slope
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      • SS600
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      • All Drainage Systems
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  • U100KM-FNHX100KCCM-1 cast iron heel-proof grate polymer concrete galv edge ULMA channel

    ULMA U100K Drainage Kit with 480 Ductile Iron Heel-Proof Grate

    ULMA U100K Drainage Kit with 480 Ductile Iron Heel-Proof Grate

    Regular price From $417.06 USD
    Regular price Sale price From $417.06 USD
    Unit price /  per 
  • MV+200K-678 ULMA MULTIV with galvanized edging and 678 grate

    ULMA MV+200K w/ 678 HP Ductile Iron 9X20 Slotted Grate Class E

    ULMA MV+200K w/ 678 HP Ductile Iron 9X20 Slotted Grate Class E

    Regular price From $275.16 USD
    Regular price Sale price From $275.16 USD
    Unit price /  per 
  • NDS500S-BA-LUNA-B NDS Mini Channel Bronze Age Brushed Bronze Luna Grate

    NDS 3" Sand Mini Channel Kit with TDS Bronze Age Luna Grate - Natural

    NDS 3" Sand Mini Channel Kit with TDS Bronze Age Luna Grate - Natural

    Regular price From $471.47 USD
    Regular price Sale price From $471.47 USD
    Unit price /  per 
  • MCKS-BA-SLOT-0336 Sand Mini Channel with Transverse Slotted Stainless Steel Grates

    NDS 3" Sand Mini Channel Kit with TDS Slotted Heel Proof Grate - 316L Stainless

    NDS 3" Sand Mini Channel Kit with TDS Slotted Heel Proof Grate - 316L Stainless

    Regular price From $312.47 USD
    Regular price Sale price From $312.47 USD
    Unit price /  per 
  • M100K-PNH100KCAM-BL Poly Black Heel-proof ADA grate polymer concrete galv edge low profile ULMA channel

    ULMA M100K Kit with 494 / PNH100KCAM Polypropylene ADA Heel Proof Grate – BLACK

    ULMA M100K Kit with 494 / PNH100KCAM Polypropylene ADA Heel Proof Grate – BLACK

    Regular price From $271.83 USD
    Regular price Sale price From $271.83 USD
    Unit price /  per 
  • ULMA M100K Drain Channel kit w/Bronze Age™ PEDREDA Grate-RAW

    ULMA M100K Drain Channel kit w/Bronze Age™ PEDREDA Grate-RAW

    ULMA M100K Drain Channel kit w/Bronze Age™ PEDREDA Grate-RAW

    Regular price From $391.38 USD
    Regular price Sale price From $391.38 USD
    Unit price /  per 
  • ULMA HYDRO PLUS with IA-GRK-0520 Iron Age Greek Key Grate-Class B

    ULMA HYDROPLUS with Iron Age GA5-20I21 / IA-GRK-0520 Greek Key Raw Cast Iron Grate Class B

    ULMA HYDROPLUS with Iron Age GA5-20I21 / IA-GRK-0520 Greek Key Raw Cast Iron Grate Class B

    Regular price From $451.48 USD
    Regular price Sale price From $451.48 USD
    Unit price /  per 
  • HYDRO PLUS with IA-BAY-0520-HP raw cast iron grate

    ULMA HYDROPLUS w/ Iron Age IA-BAY-0520-HP Mission Bay Heel Proof Raw Cast Iron Grate Class B

    ULMA HYDROPLUS w/ Iron Age IA-BAY-0520-HP Mission Bay 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 
  • Bronze Slotted Grate with Sand Mini Channel MCKS-TDS560-TDSdrains

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

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

    Regular price From $471.47 USD
    Regular price Sale price From $471.47 USD
    Unit price /  per 
  • New Image Coming Soon

    ULMA D100 Drain Channel w/402 Mesh Galvanized Grate - Class B

    ULMA D100 Drain Channel w/402 Mesh Galvanized Grate - Class B

    Regular price From $337.69 USD
    Regular price Sale price From $337.69 USD
    Unit price /  per 
  • 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

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

    Regular price From $442.30 USD
    Regular price Sale price From $442.30 USD
    Unit price /  per 
  • ULMA HYDROPLUS with Iron Age Janis Raw Cast Iron Grate

    ULMA HYDROPLUS with Iron Age JA5-20I21 / IA-JANIS-0520 Janis Raw Cast Iron Grate Class B

    ULMA HYDROPLUS with Iron Age JA5-20I21 / IA-JANIS-0520 Janis Raw Cast Iron Grate Class B

    Regular price From $451.48 USD
    Regular price Sale price From $451.48 USD
    Unit price /  per 
  • NDS500S-BA-STAR NDS Sand Mini Channel Bronze Age Natural Star Grate

    NDS 3" Sand Mini Channel Kit with TDS Bronze Age Star Grate - Natural

    NDS 3" Sand Mini Channel Kit with TDS Bronze Age Star Grate - Natural

    Regular price From $471.47 USD
    Regular price Sale price From $471.47 USD
    Unit price /  per 
  • 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

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

    Regular price From $451.48 USD
    Regular price Sale price From $451.48 USD
    Unit price /  per 
  • 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

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

    Regular price From $451.48 USD
    Regular price Sale price From $451.48 USD
    Unit price /  per 
  • ULMA HYDRO PLUS with IA-JOE-0520-HP Iron Age Regular Joe Heel Proof Grate Class BULMA HYDRO PLUS with IA-JOE-0520-HP Iron Age Regular Joe Heel Proof Grate Class B

    ULMA HYDROPLUS with Iron Age IA-JOE-0520-HP Regular Joe Heel Proof Raw Cast Iron Grate Class B

    ULMA HYDROPLUS with Iron Age IA-JOE-0520-HP Regular Joe Heel Proof Raw Cast Iron Grate Class B

    Regular price From $442.30 USD
    Regular price Sale price From $442.30 USD
    Unit price /  per 
  • ULMA U100KX Kit

    ULMA U100KX Drain Channel with Stainless Steel Edging w/o Grate

    ULMA U100KX Drain Channel with Stainless Steel Edging w/o Grate

    Regular price From $135.10 USD
    Regular price Sale price From $135.10 USD
    Unit price /  per 
  • HYDROPLUS with Iron Age Carbochon Raw Cast Iron

    ULMA HYDROPLUS w/ Class B Iron Age CAA5-20I21 / IA-CARB-0520 Carbochon Raw Cast Iron Grate

    ULMA HYDROPLUS w/ Class B Iron Age CAA5-20I21 / IA-CARB-0520 Carbochon Raw Cast Iron Grate

    Regular price From $451.48 USD
    Regular price Sale price From $451.48 USD
    Unit price /  per 
  • 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

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

    Regular price From $485.27 USD
    Regular price Sale price From $485.27 USD
    Unit price /  per 
  • Hydro Plus with Iron Age Locust Cast Iron Grate IA-LOC-0520 Class B

    ULMA HYDROPLUS w/ IA-LOC-0520 / IA-LOC-0520 Iron Age Locust Cast Iron Raw Grate Class B

    ULMA HYDROPLUS w/ IA-LOC-0520 / IA-LOC-0520 Iron Age Locust Cast Iron Raw Grate Class B

    Regular price From $451.48 USD
    Regular price Sale price From $451.48 USD
    Unit price /  per 
  • ULMA HYDROPLUS Mini with IA-MIN-0520 Iron Age Minnione Grate Raw

    ULMA HYDROPLUS Mini w/ Iron Age 5" Minnione Raw Grate | Class B

    ULMA HYDROPLUS Mini w/ Iron Age 5" Minnione Raw Grate | Class B

    Regular price From $396.78 USD
    Regular price Sale price From $396.78 USD
    Unit price /  per 
  • ULMA HYDRO MINI PLUS with IA-BAY-0520-HP Raw

    ULMA HYDROPLUS Mini IA-BAY-0520-HP Iron Age Mission Bay HP Raw Cast Iron Grate | Class B

    ULMA HYDROPLUS Mini IA-BAY-0520-HP Iron Age Mission Bay HP Raw Cast Iron Grate | Class B

    Regular price From $396.78 USD
    Regular price Sale price From $396.78 USD
    Unit price /  per 
  • M100K-GN100KCC Reinforced Galvanized Steel grate polymer concrete galv edge ULMA channel

    ULMA M100K Rein. Galv. Steel Slotted Grate (1M)

    ULMA M100K Rein. Galv. Steel Slotted Grate (1M)

    Regular price From $285.13 USD
    Regular price Sale price From $285.13 USD
    Unit price /  per 
  • NDS500S-BA-BARS Sand Mini Channel Bronze Age Natural Bars Grate

    NDS 3" Sand Mini Channel Kit with TDS Bronze Age Bars Grate - Natural

    NDS 3" Sand Mini Channel Kit with TDS Bronze Age Bars Grate - Natural

    Regular price From $471.47 USD
    Regular price Sale price From $471.47 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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