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    • 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
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      • Dura Slope
      • FP1200
      • Mini Channel
      • Polycast 600/700
      • Slim Channel
      • SS600
      • ULMA U100K(X)
      • All Drainage Systems
    • Grate Material
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  • ULMA 402_403 GEX100KCB-Mesh Galvanized grate

    ULMA 403 / GEX100KCBM Mesh Galvanized Grate 0.5M Class B

    Sale

    ULMA 403 / GEX100KCBM Mesh Galvanized Grate 0.5M Class B

    Regular price $83.94 USD
    Regular price $75.55 USD Sale price $83.94 USD
    Unit price /  per 
    Sale
  • ULMA polymer concrete channel with stainless steel edge and Iron Age Greek Key Raw Cast Iron grate

    ULMA M100KX Kit with Iron Age GA5-20I21 Greek Key Grate

    Sale

    ULMA M100KX Kit with Iron Age GA5-20I21 Greek Key Grate

    Regular price From $600.77 USD
    Regular price $662.72 USD Sale price From $600.77 USD
    Unit price /  per 
    Sale
  • ULMA MultiV200 658 - FNHX200RGCM Heelproof

    ULMA 658 Slotted Heel Proof Ductile Iron 9x20 Class C Grate - MultiV+200

    Sale

    ULMA 658 Slotted Heel Proof Ductile Iron 9x20 Class C Grate - MultiV+200

    Regular price $91.73 USD
    Regular price $82.56 USD Sale price $91.73 USD
    Unit price /  per 
    Sale
  • DG0641D POLYCAST ductile iron slotted grate Class D

    POLYCAST DG0641D Class D Slotted Ductile Iron Grate 6" x 24" (Nominal)

    POLYCAST DG0641D Class D Slotted Ductile Iron Grate 6" x 24" (Nominal)

    Regular price $65.75 USD
    Regular price Sale price $65.75 USD
    Unit price /  per 
  • ULMA U100KX Kit

    ULMA U100K Drain Channel with Galvanized Edging w/o Grate

    Sale

    ULMA U100K Drain Channel with Galvanized Edging w/o Grate

    Regular price From $54.13 USD
    Regular price $69.59 USD Sale price From $54.13 USD
    Unit price /  per 
    Sale
  • U100K00M-Carbochon Cast Iron Ironage Deco Raw Grate polymer concrete galv edge ULMA channel

    ULMA U100K Drainage Kit with Iron Age Carbochon Grate | Natural

    Sale

    ULMA U100K Drainage Kit with Iron Age Carbochon Grate | Natural

    Regular price From $605.00 USD
    Regular price $668.16 USD Sale price From $605.00 USD
    Unit price /  per 
    Sale
  • ULMA HYDROPLUS Mini w/ LUNA Ductile Iron Grate Class C

    ULMA HYDROPLUS Mini w/ LUNA Ductile Iron Grate Class C

    Sale

    ULMA HYDROPLUS Mini w/ LUNA Ductile Iron Grate Class C

    Regular price From $228.68 USD
    Regular price $237.16 USD Sale price From $228.68 USD
    Unit price /  per 
    Sale
  • ULMA drain channel with stainless steel edge and Iron Age Greek Key grate

    ULMA U100KX Drain Channel w/ Iron Age Greek Key Grate-RAW

    Sale

    ULMA U100KX Drain Channel w/ Iron Age Greek Key Grate-RAW

    Regular price From $289.62 USD
    Regular price $322.52 USD Sale price From $289.62 USD
    Unit price /  per 
    Sale
  • ULMA U100KX polymer concrete pre-sloped stainless edged channel with ductile iron class E grate

    ULMA U100KX Drainage Kit w/ TDS 461D Slotted Ductile Iron Grate

    Sale

    ULMA U100KX Drainage Kit w/ TDS 461D Slotted Ductile Iron Grate

    Regular price From $456.35 USD
    Regular price $576.74 USD Sale price From $456.35 USD
    Unit price /  per 
    Sale
  • MV+200DI-678

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

    Sale

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

    Regular price From $218.45 USD
    Regular price $280.86 USD Sale price From $218.45 USD
    Unit price /  per 
    Sale
  • ULMA 402_403 GEX100KCB-Mesh Galvanized grate

    ULMA 402 / GEX100KCB Mesh Galvanized Grate 1M Class B

    Sale

    ULMA 402 / GEX100KCB Mesh Galvanized Grate 1M Class B

    Regular price $111.85 USD
    Regular price $100.67 USD Sale price $111.85 USD
    Unit price /  per 
    Sale
  • ULMA Hydro Mini Plus with IA-GRK-0520-Iron Age Greek Key Grate Class B

    HYDROPLUS Mini w/ Iron Age 5"x20" Greek Key Raw Cast Iron Grate | Class B

    Sale

    HYDROPLUS Mini w/ Iron Age 5"x20" Greek Key Raw Cast Iron Grate | Class B

    Regular price From $402.60 USD
    Regular price $411.08 USD Sale price From $402.60 USD
    Unit price /  per 
    Sale
  • M100K-GN100KCA Galv Slotted Grate polymer concrete shallow galv edge ULMA channel

    ULMA M100K W/ Slotted Galvanized Steel Grate (1M)

    Sale

    ULMA M100K W/ Slotted Galvanized Steel Grate (1M)

    Regular price From $196.24 USD
    Regular price $246.05 USD Sale price From $196.24 USD
    Unit price /  per 
    Sale
  • RG-151224-AB

    RG-151424-AB Heavy Duty Ductile Iron Slotted 14" x 24" x 1.5" Grate | TDS

    RG-151424-AB Heavy Duty Ductile Iron Slotted 14" x 24" x 1.5" Grate | TDS

    Regular price $257.04 USD
    Regular price Sale price $257.04 USD
    Unit price /  per 
  • ULMA drain channel with stainless steel edge and polypropylene grate

    ULMA U100KX Kit with 494 / PNH100KCAM Polypropylene ADA Heel Proof Grate – BLACK

    Sale

    ULMA U100KX Kit with 494 / PNH100KCAM Polypropylene ADA Heel Proof Grate – BLACK

    Regular price From $139.81 USD
    Regular price $179.75 USD Sale price From $139.81 USD
    Unit price /  per 
    Sale
  • U100K with Galvanized Heelproof 406

    ULMA U100K Drainage Kit with ULMA Heel-Proof 406 Mesh Grate | Galvanized

    Sale

    ULMA U100K Drainage Kit with ULMA Heel-Proof 406 Mesh Grate | Galvanized

    Regular price From $134.19 USD
    Regular price $172.54 USD Sale price From $134.19 USD
    Unit price /  per 
    Sale
  • U100KM-GP100KCA 402 galv. steel perforated grate class a polymer concrete galv edge ULMA channel

    ULMA U100K Drainage Kit with ULMA 410 Perforated Grate | Galvanized Class A

    Sale

    ULMA U100K Drainage Kit with ULMA 410 Perforated Grate | Galvanized Class A

    Regular price From $266.30 USD
    Regular price $334.86 USD Sale price From $266.30 USD
    Unit price /  per 
    Sale
  • M100KX Polymer concrete linear channel with stainless steel edge with 495 grey poly grates

    ULMA M100KX Kit with 495 / PNH100KCAM-GRIS ADA Heel-Proof Poly Grate -GRAY

    Sale

    ULMA M100KX Kit with 495 / PNH100KCAM-GRIS ADA Heel-Proof Poly Grate -GRAY

    Regular price From $301.11 USD
    Regular price $377.15 USD Sale price From $301.11 USD
    Unit price /  per 
    Sale
  • ULMA M100KX Stainless Steel edged polymer concrete channel with heel-proof ductile iron class E grate

    ULMA M100KX w/480 Ductile Iron Heel-Proof Grate - Class C

    Sale

    ULMA M100KX w/480 Ductile Iron Heel-Proof Grate - Class C

    Regular price From $327.92 USD
    Regular price $411.62 USD Sale price From $327.92 USD
    Unit price /  per 
    Sale
  • U100KX-438 ULMA Channel with Reinforced 438 Wedge Wire Grate

    ULMA U100KX Kit w/ 438 Reinforced Stainless Steel Wedge Wire Grate (316L)

    Sale

    ULMA U100KX Kit w/ 438 Reinforced Stainless Steel Wedge Wire Grate (316L)

    Regular price From $410.49 USD
    Regular price $517.77 USD Sale price From $410.49 USD
    Unit price /  per 
    Sale
  • M100K-GP100KCA Galvanized perforated grate polymer concrete galv edge ULMA channel

    ULMA M100K W/Galv. Steel Perforated Grate (1M)

    Sale

    ULMA M100K W/Galv. Steel Perforated Grate (1M)

    Regular price From $187.38 USD
    Regular price $233.40 USD Sale price From $187.38 USD
    Unit price /  per 
    Sale
  • ULMA HYDRO PLUS with ULMA 460 Ductile Iron Grate-Class C

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

    Sale

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

    Regular price From $150.32 USD
    Regular price $190.64 USD Sale price From $150.32 USD
    Unit price /  per 
    Sale
  • M100K-Oblio Iron Age raw cast iron deco grate polymer concrete galv edge ULMA channel

    ULMA M100K W/ Iron Age Oblio Grate

    Sale

    ULMA M100K W/ Iron Age Oblio Grate

    Regular price From $524.99 USD
    Regular price $565.30 USD Sale price From $524.99 USD
    Unit price /  per 
    Sale
  • ULMA HYDRO PLUS with Galvanized Slotted 420-Class A

    ULMA HYDROPLUS with 420 / GN100KCA Galvanized Slotted Grate Class A

    Sale

    ULMA HYDROPLUS with 420 / GN100KCA Galvanized Slotted Grate Class A

    Regular price From $112.01 USD
    Regular price $145.13 USD Sale price From $112.01 USD
    Unit price /  per 
    Sale
  • ULMA HYDROPLUS w/ CATHEDRAL Ductile Iron Grate - Class C

    ULMA HYDROPLUS w/ CATHEDRAL Ductile Iron Grate - Class C

    Sale

    ULMA HYDROPLUS w/ CATHEDRAL 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
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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 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
  • 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

    $89.29
  • LD100X-2 Locking Device for ULMA Grates

    LD100X-2 Locking Device for ULMA Grates

    $14.40
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