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Drainage Kits
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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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      • FP1200
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      • Polycast 600/700
      • Slim Channel
      • SS600
      • ULMA U100K(X)
      • All Drainage Systems
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  • FG-MICRO-CB09 fiberglass catch basin 9 inch fiberglass grate

    FG-MICRO-CB09 Class A ADA Compliant 9" x 9" Grate - Dark Gray

    FG-MICRO-CB09 Class A ADA Compliant 9" x 9" Grate - Dark Gray

    Regular price $52.78 USD
    Regular price Sale price $52.78 USD
    Unit price /  per 
  • TDS-BARS-0312 Natural Bronze Age Grates Transverse Slotted Grate

    Bronze Age BA-BARS-0312 Bars Bronze Natural 3" x 12" Grate

    Bronze Age BA-BARS-0312 Bars Bronze Natural 3" x 12" Grate

    Regular price $136.00 USD
    Regular price Sale price $136.00 USD
    Unit price /  per 
  • IA-CARB-0312 Iron Age Carbochon

    Iron Age IA-CARB-0314 Class B Carbochon Cast Iron 3" x 14" Grate – RAW

    Iron Age IA-CARB-0314 Class B Carbochon Cast Iron 3" x 14" Grate – RAW

    Regular price $84.37 USD
    Regular price $84.37 USD Sale price $84.37 USD
    Unit price /  per 
  • Stainless Steel Perforated 3 inch Mini Channel Grate

    Perforated 316 Stainless Steel Grate 3″x12″ Load Class B

    Perforated 316 Stainless Steel Grate 3″x12″ Load Class B

    Regular price $83.00 USD
    Regular price Sale price $83.00 USD
    Unit price /  per 
  • BA-STAR-0312-B Stars Bronze Age - Brushed Bronze Grate

    Bronze Age BA-STAR-0312-B Stars Bronze Brushed 3" x 12" Grate

    Bronze Age BA-STAR-0312-B Stars Bronze Brushed 3" x 12" Grate

    Regular price $152.50 USD
    Regular price Sale price $152.50 USD
    Unit price /  per 
  • Iron 18 x 18 decorative grate

    Iron Age IA-INTER-CB18-BF Class B Interlaken Cast Iron 18" x 18" Grate - BoOF

    Iron Age IA-INTER-CB18-BF Class B Interlaken Cast Iron 18" x 18" Grate - BoOF

    Regular price $702.13 USD
    Regular price Sale price $702.13 USD
    Unit price /  per 
  • Iron Age-IA CARB-0820 2 - BoOF

    Iron Age IA-CARB-0820-BF Class B Carbochon Cast Iron Grate - BoOF 8" x 20" (Nominal)

    Iron Age IA-CARB-0820-BF Class B Carbochon Cast Iron Grate - BoOF 8" x 20" (Nominal)

    Regular price $367.51 USD
    Regular price Sale price $367.51 USD
    Unit price /  per 
  • IA-LOC-CB12 Iron Age Locust Grate 12x12"

    Iron Age IA-LOC-CB12 Class B Locust Cast Iron 12" x 12" Grate - RAW

    Iron Age IA-LOC-CB12 Class B Locust Cast Iron 12" x 12" Grate - RAW

    Regular price $221.65 USD
    Regular price Sale price $221.65 USD
    Unit price /  per 
  • Iron Age | Class B | Heel-Proof Rain Cast Iron 3" x 12" Grate | RAW

    Iron Age | Class B | Heel-Proof Rain Cast Iron 3" x 12" Grate | RAW

    Iron Age | Class B | Heel-Proof Rain Cast Iron 3" x 12" Grate | RAW

    Regular price $74.36 USD
    Regular price $49.00 USD Sale price $74.36 USD
    Unit price /  per 
  • IA-Interlaken-boof-3x11-TDSdrains

    Iron Age IA-INTER-0311-BF Class B Interlaken Cast Iron 3" x 11" Grate - BoOF

    Iron Age IA-INTER-0311-BF Class B Interlaken Cast Iron 3" x 11" Grate - BoOF

    Regular price $108.68 USD
    Regular price Sale price $108.68 USD
    Unit price /  per 
  • FG-MESH-CB09-FRONT 9" Catch Basin FRP Grate

    FG-MESH-CB09 Class A Fiberglass 9" x 9" x 1" Catch Basin Grate - Dark Grey

    FG-MESH-CB09 Class A Fiberglass 9" x 9" x 1" Catch Basin Grate - Dark Grey

    Regular price $29.20 USD
    Regular price Sale price $29.20 USD
    Unit price /  per 
  • IA-Inter-CB12 Iron Age Interlaken 12" Catch Basin Grate in Raw Cast Iron

    Iron Age IA-INTER-CB12 Class B Interlaken Raw Cast Iron 12" x 12" Grate

    Iron Age IA-INTER-CB12 Class B Interlaken Raw Cast Iron 12" x 12" Grate

    Regular price $221.65 USD
    Regular price Sale price $221.65 USD
    Unit price /  per 
  • BA-PED-0312 Bronze Natural Mini Channel Pedreda Grate

    Bronze Age BA-PED-0312 Class A Pedreda Bronze Natural Finish 3" x 12" Grate

    Bronze Age BA-PED-0312 Class A Pedreda Bronze Natural Finish 3" x 12" Grate

    Regular price $136.00 USD
    Regular price Sale price $136.00 USD
    Unit price /  per 
  • IA-Interlaken-raw-3x11-full-TDSdrains

    Iron Age IA-INTER-0311 Class B Interlaken Cast Iron 3" x 11" Grate - RAW

    Iron Age IA-INTER-0311 Class B Interlaken Cast Iron 3" x 11" Grate - RAW

    Regular price $74.36 USD
    Regular price Sale price $74.36 USD
    Unit price /  per 
  • IA-Minnione-raw-3x12-2-TDSdrains

    Iron Age IA-MIN-0312 Class B Minnione Cast Iron 3" x 12" Grate - RAW

    Iron Age IA-MIN-0312 Class B Minnione Cast Iron 3" x 12" Grate - RAW

    Regular price $74.36 USD
    Regular price $74.36 USD Sale price $74.36 USD
    Unit price /  per 
  • IA-6in-round-Interlaken-BF-DK

    Iron Age IA-INTER-6D-HP-BF Class B Interlaken 6" Dia Grate – BoOF

    Iron Age IA-INTER-6D-HP-BF Class B Interlaken 6" Dia Grate – BoOF

    Regular price $143.00 USD
    Regular price Sale price $143.00 USD
    Unit price /  per 
  • IA-QUE-3x12 Iron Age Cast Iron for Mini Channel

    Iron Age IA-QUE-0312-HP Class B Transverse Slotted Cast Iron 3" x 12" Grate - RAW

    Iron Age IA-QUE-0312-HP Class B Transverse Slotted Cast Iron 3" x 12" Grate - RAW

    Regular price $74.36 USD
    Regular price $74.36 USD Sale price $74.36 USD
    Unit price /  per 
  • IA-locust-raw-3x12-fullview-TDSdrains

    Iron Age IA-LOC-0312 Class B Cast Iron Locust 3" x 12" Grate - RAW

    Iron Age IA-LOC-0312 Class B Cast Iron Locust 3" x 12" Grate - RAW

    Regular price $74.36 USD
    Regular price $74.36 USD Sale price $74.36 USD
    Unit price /  per 
  • 5inch-cast-iron-grate-interlaken-2 IA-INTER-0520

    Iron Age IA-INTER-0418 Class B Interlaken Cast Iron 4" x 18" Grate - RAW

    Iron Age IA-INTER-0418 Class B Interlaken Cast Iron 4" x 18" Grate - RAW

    Regular price $141.57 USD
    Regular price Sale price $141.57 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 
  • Iron Age IA-LOC-CB24 / LN24-24|14 Class B Locust Cast Iron 24" x 24" Grate - Natural

    Iron Age IA-LOC-CB24 / LN24-24|14 Class B Locust Cast Iron 24" x 24" Grate - Natural

    Iron Age IA-LOC-CB24 / LN24-24|14 Class B Locust Cast Iron 24" x 24" Grate - Natural

    Regular price $760.76 USD
    Regular price Sale price $760.76 USD
    Unit price /  per 
  • IA-Oblio-CB12-BF Iron Age Oblio Catch Basin Grate with Baked on Oil Finish

    Iron Age IA-OBLIO-CB12-BF Class B Heel-Proof Oblio Cast Iron 12" x 12" Grate - BoOF

    Iron Age IA-OBLIO-CB12-BF Class B Heel-Proof Oblio Cast Iron 12" x 12" Grate - BoOF

    Regular price $297.44 USD
    Regular price Sale price $297.44 USD
    Unit price /  per 
  • IA-OBLIO-CB12 Iron Age 12x12" Raw Cast Iron Oblio Grate

    Iron Age IA-OBLIO-CB12-HP Class B Heel-Proof Oblio Cast Iron 12" x 12" Grate - RAW

    Iron Age IA-OBLIO-CB12-HP Class B Heel-Proof Oblio Cast Iron 12" x 12" Grate - RAW

    Regular price $221.65 USD
    Regular price Sale price $221.65 USD
    Unit price /  per 
  • IA-Interlaken-grate-Spee-D-channel-BooF Iron Age

    Iron Age IA-INTER-0418-BF Class B Interlaken Cast Iron 4" x 18" Grate - BoOF

    Iron Age IA-INTER-0418-BF Class B Interlaken Cast Iron 4" x 18" Grate - BoOF

    Regular price $197.34 USD
    Regular price Sale price $197.34 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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