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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 Load Classes
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      • Zurn
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      • FP1200
      • Mini Channel
      • Polycast 600/700
      • Slim Channel
      • SS600
      • ULMA U100K(X)
      • All Drainage Systems
    • Grate Material
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  • Iron Age Cast Iron Paradise BoOF Grate

    ULMA HYDROPLUS with Iron Age PA5-20I21 / IA-PAR-0520 Paradise BoOF Cast Iron Grate Class B

    Sale

    ULMA HYDROPLUS with Iron Age PA5-20I21 / IA-PAR-0520 Paradise BoOF Cast Iron Grate Class B

    Regular price From $541.52 USD
    Regular price $565.45 USD Sale price From $541.52 USD
    Unit price /  per 
    Sale
  • U1KX-IA-QUE-HP

    ULMA U100KX Drain Channel w/ Iron Age Que Grate-RAW

    Sale

    ULMA U100KX Drain Channel w/ Iron Age Que Grate-RAW

    Regular price From $289.62 USD
    Regular price $322.52 USD Sale price From $289.62 USD
    Unit price /  per 
    Sale
  • ULMA drain channel with stainless steel edge and Iron Age Oblio grate

    ULMA U100KX Drain Channel w/ Iron Age Oblio Grate - RAW

    Sale

    ULMA U100KX Drain Channel w/ Iron Age Oblio Grate - RAW

    Regular price From $289.62 USD
    Regular price $322.52 USD Sale price From $289.62 USD
    Unit price /  per 
    Sale
  • M100K-Iron Age Mission Bay grate with Baked on Oil finish and ULMA channel with galvanized edging

    ULMA M100K with Iron Age Mission Bay Grates

    Sale

    ULMA M100K with Iron Age Mission Bay Grates

    Regular price From $524.99 USD
    Regular price $565.30 USD Sale price From $524.99 USD
    Unit price /  per 
    Sale
  • 5inch-cast-iron-grate-interlaken-2 IA-INTER-0520

    Iron Age IA-INTER-0520 Interlaken Cast Iron 122mm x 500mm Grates Class B - Raw

    Iron Age IA-INTER-0520 Interlaken Cast Iron 122mm x 500mm Grates Class B - Raw

    Regular price $174.46 USD
    Regular price Sale price $174.46 USD
    Unit price /  per 
  • ULMA HYDRO PLUS with IA-RIV-0520-BF Iron Age River Rock Grate- BoOF Class B

    ULMA HYDROPLUS with Iron Age IA-RIV-0520-BF River Rock - BoOF

    Sale

    ULMA HYDROPLUS with Iron Age IA-RIV-0520-BF River Rock - BoOF

    Regular price From $559.11 USD
    Regular price $583.04 USD Sale price From $559.11 USD
    Unit price /  per 
    Sale
  • ULMA U100KX with Stainless Steel Edge and Stainless Steel Slotted Grate

    ULMA U100KX w/ Stainless Steel Slotted Grate (450)

    Sale

    ULMA U100KX w/ Stainless Steel Slotted Grate (450)

    Regular price From $464.65 USD
    Regular price $587.41 USD Sale price From $464.65 USD
    Unit price /  per 
    Sale
  • TDS-4in-aluminum-cathedral-TDSdrains

    Bronze Age BA-CATH-4D-A Class A Cathedral Aluminum 4" Dia. Grate

    Bronze Age BA-CATH-4D-A Class A Cathedral Aluminum 4" Dia. Grate

    Regular price $91.00 USD
    Regular price Sale price $91.00 USD
    Unit price /  per 
  • POLY700-PE-647R

    POLYCAST® 700 Vinyl Ester Series Kit w/DG0647R Reinforced Slotted Stainless Grate & HDPE Frame

    POLYCAST® 700 Vinyl Ester Series Kit w/DG0647R Reinforced Slotted Stainless Grate & HDPE Frame

    Regular price From $1,036.52 USD
    Regular price Sale price From $1,036.52 USD
    Unit price /  per 
  • ULMA HYDROPLUS with Iron Age Janis BoOF Cast Iron Grate

    ULMA HYDROPLUS with Iron Age IA-JANIS-BF-0520 Janis BoOF Cast Iron Grate Class B

    Sale

    ULMA HYDROPLUS with Iron Age IA-JANIS-BF-0520 Janis 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
  • NDS-Dura-XX-662-TDSdrains

    NDS® Dura Slope Kit with DS-662 HDPE Slotted Grate | Green

    NDS® Dura Slope Kit with DS-662 HDPE Slotted Grate | Green

    Regular price From $426.40 USD
    Regular price Sale price From $426.40 USD
    Unit price /  per 
  • 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
  • MMG-BF-LUNA-B

    TDS™ 3" Gray MAX Mini w/ Brushed Bronze Luna Grate & Oil Rubbed Bronze Edge

    TDS™ 3" Gray MAX Mini w/ Brushed Bronze Luna Grate & Oil Rubbed Bronze Edge

    Regular price From $1,198.59 USD
    Regular price Sale price From $1,198.59 USD
    Unit price /  per 
  • POLYCAST 600 -SS

    POLYCAST® 600 Vinyl Ester Series Kit with DG0641D Slotted Ductile Iron Grate & Stainless Edge

    POLYCAST® 600 Vinyl Ester Series Kit with DG0641D Slotted Ductile Iron Grate & Stainless Edge

    Regular price From $356.39 USD
    Regular price Sale price From $356.39 USD
    Unit price /  per 
  • U100K-GreekKey-boof cast iron deco ironage grate polymer concrete channel ULMA galv edge

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

    Sale

    ULMA U100K Drainage Kit with Iron Age Greek Key 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
  • New Image Coming Soon

    ULMA HYDROPLUS w/ WAVE Ductile Iron Grate - Class C

    Sale

    ULMA HYDROPLUS w/ WAVE 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
  • DP0650-Catch Basin

    POLYCAST® DP0750 Inline Catch Basin w/FG0644SPH Fiberglass Slot Grate & HDPE Frame

    POLYCAST® DP0750 Inline Catch Basin w/FG0644SPH Fiberglass Slot Grate & HDPE Frame

    Regular price $560.82 USD
    Regular price Sale price $560.82 USD
    Unit price /  per 
  • Bronze Age™ BA-FERN-0520 Ductile Iron 5" x 20" Grate - RAW

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

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

    Regular price $87.50 USD
    Regular price Sale price $87.50 USD
    Unit price /  per 
  • Hydro Plus with Interlaken Raw Grate IA-INTER-0520

    ULMA HYDROPLUS with Iron Age IA-INTER-0520 Interlaken Raw Cast Iron Grate Class B

    Sale

    ULMA HYDROPLUS with Iron Age IA-INTER-0520 Interlaken 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
  • NDS-mini-554GYKit-TDSdrains

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

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

    Regular price From $94.73 USD
    Regular price Sale price From $94.73 USD
    Unit price /  per 
  • NDS Mini Channel with Black Slotted Grate

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

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

    Regular price From $86.72 USD
    Regular price Sale price From $86.72 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 $233.09 USD
    Regular price Sale price $233.09 USD
    Unit price /  per 
  • M100K-Interlaken raw cast iron deco grate polymer concrete galv edge ULMA channel

    ULMA M100K W/Iron Age Interlaken Grate

    Sale

    ULMA M100K W/Iron Age Interlaken Grate

    Regular price From $518.94 USD
    Regular price $557.52 USD Sale price From $518.94 USD
    Unit price /  per 
    Sale
  • ULMA drain channel with stainless steel edge and Iron Age Minnione grate

    ULMA U100KX Drain Channel w/ Iron Age Minnione Grate - RAW

    Sale

    ULMA U100KX Drain Channel w/ Iron Age Minnione Grate - RAW

    Regular price From $289.62 USD
    Regular price $322.52 USD Sale price From $289.62 USD
    Unit price /  per 
    Sale
  • FGK-MESH-EZ-08 Fiberglass Grate

    FG-MESH-0848 Mesh Fiberglass 8"X48"x1.5" Grate Load Class C

    FG-MESH-0848 Mesh Fiberglass 8"X48"x1.5" Grate Load Class C

    Regular price $191.31 USD
    Regular price Sale price $191.31 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 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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