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      • All Drainage Systems
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  • ULMA HYDROPLUS Mini with Interlaken Raw IA-INTER-0520 Class B

    HYDROPLUS Mini w/ Iron Age 5"x 20" Interlaken Raw Cast Iron Grate | Class B

    HYDROPLUS Mini w/ Iron Age 5"x 20" Interlaken Raw Cast Iron Grate | Class B

    Regular price From $389.00 USD
    Regular price Sale price From $389.00 USD
    Unit price /  per 
  • A-FOAM-0336 Stainless Steel 3x36

    Bronze Age TDS-FOAM-0336-L Foam 316L Stainless Steel 3″x36″ Grate Load Class B

    Bronze Age TDS-FOAM-0336-L Foam 316L Stainless Steel 3″x36″ Grate Load Class B

    Regular price $249.00 USD
    Regular price Sale price $249.00 USD
    Unit price /  per 
  • BA-BARS-0312-BF

    TDS® 3" Gray Max Mini w/ Bronze Age™ Bars Grate - BoOF & Oil Rubbed Bronze Edge

    TDS® 3" Gray Max Mini w/ Bronze Age™ Bars Grate - BoOF & Oil Rubbed Bronze Edge

    Regular price From $659.78 USD
    Regular price Sale price From $659.78 USD
    Unit price /  per 
  • NDS 9206H Slim Channel 2" x 36" Channel

    NDS 9206H Slim Channel 2" x 36" Channel

    NDS 9206H Slim Channel 2" x 36" Channel

    Regular price $35.10 USD
    Regular price Sale price $35.10 USD
    Unit price /  per 
  • BA-CATH-0336 Stainless Steel Grate

    Cathedral 304 Stainless Steel Heel Proof Grate 3″x12″ Load Class B

    Cathedral 304 Stainless Steel Heel Proof Grate 3″x12″ Load Class B

    Regular price $50.00 USD
    Regular price Sale price $50.00 USD
    Unit price /  per 
  • ULMA HYDROM-INTER-HP HYDROPLUS Mini Interlaken Heelproof - Raw

    HYDROPLUS Mini w/ Iron Age 5"x 20" Heel Proof Interlaken RAW Cast Iron Grate | Class B

    HYDROPLUS Mini w/ Iron Age 5"x 20" Heel Proof Interlaken RAW Cast Iron Grate | Class B

    Regular price From $396.78 USD
    Regular price Sale price From $396.78 USD
    Unit price /  per 
  • HYDROM-ANISE-0520-HP-BF ULMA HYDROPLUS Anise 0520-BOOF

    ULMA HYDROPLUS Mini w/ Iron Age Anise Heel Proof BoOF Cast Iron Grate | Class B

    ULMA HYDROPLUS Mini w/ Iron Age Anise Heel Proof BoOF Cast Iron Grate | Class B

    Regular price From $508.32 USD
    Regular price Sale price From $508.32 USD
    Unit price /  per 
  • 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

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

    Regular price From $389.00 USD
    Regular price Sale price From $389.00 USD
    Unit price /  per 
  • ULMA Hydro Mini Plus H80 with IA-IA-JOE-0520-HP-BF Iron Age Regular Joe Heel Proof BoOF Grate Class B

    ULMA HYDROPLUS Mini w/ Iron Age Regular Joe BoOF Heel Proof Cast Iron Grate | Class B

    ULMA HYDROPLUS Mini w/ Iron Age Regular Joe BoOF Heel Proof Cast Iron Grate | Class B

    Regular price From $508.32 USD
    Regular price Sale price From $508.32 USD
    Unit price /  per 
  • ULMA Hydro Mini Plus with IA-GRK-0520-BF Iron Age Greek Key BoOF Grate Class B

    HYDROPLUS Mini w/ Iron Age 5"x 20" Greek Key BoOF Cast Iron Grate | Class B

    HYDROPLUS Mini w/ Iron Age 5"x 20" Greek Key BoOF Cast Iron Grate | Class B

    Regular price From $508.32 USD
    Regular price Sale price From $508.32 USD
    Unit price /  per 
  • BA-SLOT-0312-BF TDS Bronze Age Slotted Ductile Iron Grate with BoOF

    TDS® 3" Sand Max Mini w/ Bronze Age™ Slot Grate - BoOF & Oil Rubbed Bronze Edge

    TDS® 3" Sand Max Mini w/ Bronze Age™ Slot Grate - BoOF & Oil Rubbed Bronze Edge

    Regular price From $653.98 USD
    Regular price Sale price From $653.98 USD
    Unit price /  per 
  • ULMA Hydro Mini Plus H80 with IA-IA-JOE-0520-HP Iron Age Regular Joe Heel Proof Grate Class B

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

    ULMA HYDROPLUS Mini w/ Iron Age Regular Joe Raw Heel Proof 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-GRK-0520-Iron Age Greek Key Grate Class B

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

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

    Regular price From $396.78 USD
    Regular price Sale price From $396.78 USD
    Unit price /  per 
  • HYDROM-ANISE-0520-HP ULMA HYDROPLUS Anise 0520-Raw

    ULMA HYDROPLUS Mini w/ Iron Age IA-ANISE-0520-HP Anise Heel Proof Cast Iron Grate | Class B

    ULMA HYDROPLUS Mini w/ Iron Age IA-ANISE-0520-HP Anise Heel Proof Cast Iron Grate | Class B

    Regular price From $396.78 USD
    Regular price Sale price From $396.78 USD
    Unit price /  per 
  • MMS-BF-555 Wave mini channel max mini

    TDS™ 3" Sand MAX Mini w/ Wave BoOF Grate & Oil Rubbed Bronze Edge

    TDS™ 3" Sand MAX Mini w/ Wave BoOF Grate & Oil Rubbed Bronze Edge

    Regular price From $830.88 USD
    Regular price Sale price From $830.88 USD
    Unit price /  per 
  • BA-PED-0312-BF TDS Bronze Age Pedreda BoOF grate

    TDS® 3" Sand Max Mini w/ Bronze Age™ Pedreda Grate - BoOF & Oil Rubbed Bronze Edge

    TDS® 3" Sand Max Mini w/ Bronze Age™ Pedreda Grate - BoOF & Oil Rubbed Bronze Edge

    Regular price From $659.78 USD
    Regular price Sale price From $659.78 USD
    Unit price /  per 
  • BA-LUNA-0312-BF TDS Bronze Age Luna Grate in Ductile Iron with BoOF finish

    TDS® 3" Sand Max Mini w/ Bronze Age™ Luna Grate - BoOF & Oil Rubbed Bronze Edge

    TDS® 3" Sand Max Mini w/ Bronze Age™ Luna Grate - BoOF & Oil Rubbed Bronze Edge

    Regular price From $665.58 USD
    Regular price Sale price From $665.58 USD
    Unit price /  per 
  • ULMA Hydro Mini Plus H80 with IA-LOC-0520 Iron Age Locust Grate Class B

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

    ULMA HYDROPLUS Mini w/ Iron Age 5" Locust Raw Cast Iron 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-ARGO-0520-HP-BF Iron Age Argo Heel proof BoOF Grate Class B

    ULMA HYDROPLUS Mini w/ Iron Age IA-ARGO-0520-HP-BF Argo Heel Proof BoOF Cast Iron Grate Class B

    ULMA HYDROPLUS Mini w/ Iron Age IA-ARGO-0520-HP-BF Argo Heel Proof BoOF Cast Iron Grate Class B

    Regular price From $508.32 USD
    Regular price Sale price From $508.32 USD
    Unit price /  per 
  • A-FOAM-0336 Stainless Steel 3x36

    Bronze Age™ TDS-FOAM-0312-L Foam 316L Stainless Steel 3″x12″ Grate

    Bronze Age™ TDS-FOAM-0312-L Foam 316L Stainless Steel 3″x12″ Grate

    Regular price $83.00 USD
    Regular price Sale price $83.00 USD
    Unit price /  per 
  • MMS-BF-LOC Locust ironage mini channel max mini

    TDS™ 3" Sand MAX Mini w/ Locust BoOF Grate & Oil Rubbed Bronze Edge

    TDS™ 3" Sand MAX Mini w/ Locust BoOF Grate & Oil Rubbed Bronze Edge

    Regular price From $1,068.03 USD
    Regular price Sale price From $1,068.03 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 
  • BA-LUNA-0312-BF TDS Bronze Age Luna Grate in Ductile Iron with BoOF finish

    TDS® 3" Gray Max Mini w/ Bronze Age™ Luna Grate - BoOF & Oil Rubbed Bronze Edge

    TDS® 3" Gray Max Mini w/ Bronze Age™ Luna Grate - BoOF & Oil Rubbed Bronze Edge

    Regular price From $665.58 USD
    Regular price Sale price From $665.58 USD
    Unit price /  per 
  • NDS Slim Channel Kit with Sand Chain Grate

    NDS Slim Channel Kit with NDS 9262 Chain Grate - SAND

    NDS Slim Channel Kit with NDS 9262 Chain Grate - SAND

    Regular price From $84.60 USD
    Regular price Sale price From $84.60 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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