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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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      • All Load Classes
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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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Products Blogs
  • ULMA shallow drain channel with stainless steel edge and Iron Age Greek Key grate with Baked on Oil Finish

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

    Sale

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

    Regular price From $718.03 USD
    Regular price $779.98 USD Sale price From $718.03 USD
    Unit price /  per 
    Sale
  • M100K- with 402 Galvanized Mesh Grate

    M100K W/ 1M Galv. Steel Mesh Grate (402)-ULMA

    Sale

    M100K W/ 1M Galv. Steel Mesh Grate (402)-ULMA

    Regular price From $247.65 USD
    Regular price $308.40 USD Sale price From $247.65 USD
    Unit price /  per 
    Sale
  • ULMA M100K Drain Channel kit w/Bronze Age™ PEDREDA Grate-RAW

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

    Sale

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

    Regular price From $351.07 USD
    Regular price $391.38 USD Sale price From $351.07 USD
    Unit price /  per 
    Sale
  • ULMA U100KX with Black 480 Heel Proof Grate

    ULMA U100KX w/ Ductile Iron Heel-Proof Grate (480)

    Sale

    ULMA U100KX w/ Ductile Iron Heel-Proof Grate (480)

    Regular price From $156.77 USD
    Regular price $201.56 USD Sale price From $156.77 USD
    Unit price /  per 
    Sale
  • ULMA U100KX Kit

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

    Sale

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

    Regular price From $105.08 USD
    Regular price $135.10 USD Sale price From $105.08 USD
    Unit price /  per 
    Sale
  • M100K-River Rock Iron Age deco raw cast iron grate polymer concrete galv edge ULMA channel

    ULMA M100K W/ Iron Age River Rock Grate

    Sale

    ULMA M100K W/ Iron Age River Rock Grate

    Regular price From $524.99 USD
    Regular price $565.30 USD Sale price From $524.99 USD
    Unit price /  per 
    Sale
  • M100K-Argo Iron Age deco cast iron raw grate polymer concrete galv edge ULMA channel

    ULMA M100K W/Iron Age Argo Grate

    Sale

    ULMA M100K W/Iron Age Argo Grate

    Regular price From $524.99 USD
    Regular price $565.30 USD Sale price From $524.99 USD
    Unit price /  per 
    Sale
  • U100K with 402 Galvanized Steel Mesh Grate

    ULMA U100K Drainage Kit with ULMA 402 Mesh Grate | Galvanized

    Sale

    ULMA U100K Drainage Kit with ULMA 402 Mesh Grate | Galvanized

    Regular price From $122.69 USD
    Regular price $157.74 USD Sale price From $122.69 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
  • Ulma U100KX Channel with Iron Age Heel Proof Regular Joe Grate

    Regular Joe Iron Age Grates on U100KX-ULMA Heelproof-RAW

    Sale

    Regular Joe Iron Age Grates on U100KX-ULMA Heelproof-RAW

    Regular price From $719.51 USD
    Regular price $815.39 USD Sale price From $719.51 USD
    Unit price /  per 
    Sale
  • ULMA HYDROPLUS - 480 Ductile Iron Heel Proof Slotted C250 0.5M

    ULMA HYDROPLUS with 480/FNHX100KCCM Ductile Iron Heel Proof Slotted Grate Class C

    Sale

    ULMA HYDROPLUS with 480/FNHX100KCCM Ductile Iron Heel Proof Slotted Grate Class C

    Regular price From $169.01 USD
    Regular price $214.67 USD Sale price From $169.01 USD
    Unit price /  per 
    Sale
  • ULMA U100KX with 486 Vinyl Ester 0.9 FRP Grate

    ULMA U100KX Kit with TDS 486 Vinyl Ester Bar Center Grate 0.9" on Center - Class B

    Sale

    ULMA U100KX Kit with TDS 486 Vinyl Ester Bar Center Grate 0.9" on Center - Class B

    Regular price From $572.06 USD
    Regular price $725.51 USD Sale price From $572.06 USD
    Unit price /  per 
    Sale
  • ULMA U100KX with Stainless Steel Edge and Stainless Steel Perforated Grate

    ULMA U100KX w/ Stainless Steel Perforated Grate (440)

    Sale

    ULMA U100KX w/ Stainless Steel Perforated Grate (440)

    Regular price From $477.69 USD
    Regular price $604.17 USD Sale price From $477.69 USD
    Unit price /  per 
    Sale
  • M100K w/Bronze Age™ Cathedral Ductile Iron Heel-Proof Grate - RAW

    M100K w/Bronze Age™ Cathedral Ductile Iron Heel-Proof Grate - RAW

    Sale

    M100K w/Bronze Age™ Cathedral Ductile Iron Heel-Proof Grate - RAW

    Regular price From $351.07 USD
    Regular price $391.38 USD Sale price From $351.07 USD
    Unit price /  per 
    Sale
  • ULMA U100KX Drain Channel kit w/ Bronze Age™ Luna Grate-RAW

    ULMA U100KX Drain Channel kit w/ Bronze Age™ Luna Grate-RAW

    Sale

    ULMA U100KX Drain Channel kit w/ Bronze Age™ Luna Grate-RAW

    Regular price From $206.23 USD
    Regular price $240.15 USD Sale price From $206.23 USD
    Unit price /  per 
    Sale
  • New Image Coming Soon

    ULMA U100KX Drain Channel kit w/Bronze Age™ WAVE Grate-RAW

    Sale

    ULMA U100KX Drain Channel kit w/Bronze Age™ WAVE Grate-RAW

    Regular price From $206.23 USD
    Regular price $240.15 USD Sale price From $206.23 USD
    Unit price /  per 
    Sale
  • ULMA U100KX with Stainless Steel Edge and Stainless Steel Slotted Grate

    ULMA U100KX w/ Reinforced Stainless Steel Slotted Grate (454) Class C

    Sale

    ULMA U100KX w/ Reinforced Stainless Steel Slotted Grate (454) Class C

    Regular price From $296.01 USD
    Regular price $380.58 USD Sale price From $296.01 USD
    Unit price /  per 
    Sale
  • M100K-FNHX100KCCM-2 Ductile Iron grate Low Profile shallow polymer concrete galv edge ULMA channel

    ULMA M100K W/ Ductile Iron Slotted Grate (1/2M) Class C

    Sale

    ULMA M100K W/ Ductile Iron Slotted Grate (1/2M) Class C

    Regular price From $233.46 USD
    Regular price $290.16 USD Sale price From $233.46 USD
    Unit price /  per 
    Sale
  • 12in Micro Mesh EZ Frame

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

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

    Regular price From $546.37 USD
    Regular price Sale price From $546.37 USD
    Unit price /  per 
  • MV+200DI-660

    ULMA MV+200D w/ 660 Ductile Iron 9X20 Slotted Grate Class D

    Sale

    ULMA MV+200D w/ 660 Ductile Iron 9X20 Slotted Grate Class D

    Regular price From $195.77 USD
    Regular price $251.70 USD Sale price From $195.77 USD
    Unit price /  per 
    Sale
  • U100K-Janis-boof ironage cast iron grate polymer concrete ulma channel

    ULMA U100K Drainage Kit with Iron Age Janis Grate | Baked on Oil Finish

    Sale

    ULMA U100K Drainage Kit with Iron Age Janis Grate | Baked on Oil Finish

    Regular price From $722.26 USD
    Regular price $785.42 USD Sale price From $722.26 USD
    Unit price /  per 
    Sale
  • ULMA HYDROPLUS Mini w/ CATHEDRAL Ductile Iron Grate Class C

    ULMA HYDROPLUS Mini w/ CATHEDRAL Ductile Iron Grate Class C

    Sale

    ULMA HYDROPLUS Mini w/ CATHEDRAL 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 D100-495

    ULMA D100 Drain Channel w/495 Gray Slotted Plastic Grate - Class A

    Sale

    ULMA D100 Drain Channel w/495 Gray Slotted Plastic Grate - Class A

    Regular price From $287.93 USD
    Regular price $309.00 USD Sale price From $287.93 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 M100K Drain Channel kit w/Bronze Age™ BARS Grate-RAW

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

    Sale

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

    Regular price From $351.07 USD
    Regular price $391.38 USD Sale price From $351.07 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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