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  • Drainage Kits
    • Popular Manufacturers
      • TDS
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      • Slim Channel
      • SS600
      • ULMA U100K(X)
      • All Drainage Systems
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  • NDS849 12" Pro Series Channel Grate Security Cap, Gray

    NDS 849 Pro Series 12 Grate Security Clip

    NDS 849 Pro Series 12 Grate Security Clip

    Regular price $12.54 USD
    Regular price Sale price $12.54 USD
    Unit price /  per 
  • ZURN Z884 Drainage Kit w/ P4-HPP-BROWN HDPE Slotted Grate - Vandal Proof Locks

    ZURN Z884 Drainage Kit w/ P4-HPP-BROWN HDPE Slotted Grate - Vandal Proof Locks

    ZURN Z884 Drainage Kit w/ P4-HPP-BROWN HDPE Slotted Grate - Vandal Proof Locks

    Regular price From $340.88 USD
    Regular price Sale price From $340.88 USD
    Unit price /  per 
  • ULMA HYDRO PLUS with IA-ARGO-0520-HP Iron Age Argo Heelproof Grate-Class B

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

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

    Regular price From $451.48 USD
    Regular price Sale price From $451.48 USD
    Unit price /  per 
  • Mearin-100-locking-device-CI-1024x768

    MEArin 141460 Hold-Down Device for MEArin100 Series Cast Iron Grate

    MEArin 141460 Hold-Down Device for MEArin100 Series Cast Iron Grate

    Regular price $8.06 USD
    Regular price Sale price $8.06 USD
    Unit price /  per 
  • POLY600-SS-669

    POLYCAST® 600 Vinyl Ester Series Kit with DG0669 Stainless Bar Grate & Edge

    POLYCAST® 600 Vinyl Ester Series Kit with DG0669 Stainless Bar Grate & Edge

    Regular price From $861.26 USD
    Regular price Sale price From $861.26 USD
    Unit price /  per 
  • DG0644-Polycast-fiberglass-bar-grate-TDSdrains

    POLYCAST FG0644 Class B Spacing 5/8" Fiberglass BAR 6" x 48" Grate

    POLYCAST FG0644 Class B Spacing 5/8" Fiberglass BAR 6" x 48" Grate

    Regular price $195.51 USD
    Regular price Sale price $195.51 USD
    Unit price /  per 
  • ULMA U100K with 486 Vinyl Ester 0.9 FRP Grate

    ULMA U100K Drainage Kit with TDS Vinyl Ester Bar Grate 0.9″ on center - Class B

    ULMA U100K Drainage Kit with TDS Vinyl Ester Bar Grate 0.9″ on center - Class B

    Regular price From $637.05 USD
    Regular price Sale price From $637.05 USD
    Unit price /  per 
  • PCK5-DG0622 Foam Perforated

    POLYCAST 500 Kit w/ DG0622 Galvanized Foam Perforated Grate | Class A

    POLYCAST 500 Kit w/ DG0622 Galvanized Foam Perforated Grate | Class A

    Regular price From $457.78 USD
    Regular price Sale price From $457.78 USD
    Unit price /  per 
  • HYDROPLUS with Iron Age Oblio Raw Cast Iron

    ULMA HYDROPLUS with Iron Age OA5-20I21 / IA-OBLIO-0520 Oblio Raw Cast Iron Grate Class B

    ULMA HYDROPLUS with Iron Age OA5-20I21 / IA-OBLIO-0520 Oblio Raw Cast Iron Grate Class B

    Regular price From $451.48 USD
    Regular price Sale price From $451.48 USD
    Unit price /  per 
  • M100K-FNHX100KCCM-1 Wave heel-proof cast iron grate polymer concrete galv edge ULMA channel

    ULMA M100K W/Ductile Iron Heel-proof Wave Grate (1/2 M) Class C

    ULMA M100K W/Ductile Iron Heel-proof Wave Grate (1/2 M) Class C

    Regular price From $314.19 USD
    Regular price Sale price From $314.19 USD
    Unit price /  per 
  • POLY500-XX-644 Polycast 500 with DG0644 Fiberglass Grates with 5/8" slot openings

    POLYCAST 500 Series Kit with FG0644 Vinyl-Ester Bar 5/8" Spacing Grate

    POLYCAST 500 Series Kit with FG0644 Vinyl-Ester Bar 5/8" Spacing Grate

    Regular price From $612.20 USD
    Regular price Sale price From $612.20 USD
    Unit price /  per 
  • POLY600-XX-640R-TDSdrains

    POLYCAST 600 Series Kit with DG0640R Slotted Galvanized Grate

    POLYCAST 600 Series Kit with DG0640R Slotted Galvanized Grate

    Regular price From $373.70 USD
    Regular price Sale price From $373.70 USD
    Unit price /  per 
  • SS600 stainless steel channel with DG0644 fiberglass grate

    SS600 Stainless Steel Drain Kit w/ FG0644 Fiberglass Bar Grate | Class B

    SS600 Stainless Steel Drain Kit w/ FG0644 Fiberglass Bar Grate | Class B

    Regular price From $3,820.46 USD
    Regular price Sale price From $3,820.46 USD
    Unit price /  per 
  • Z884-P4-PG ZURN Z884 with Galv Perf Class A

    ZURN Z884 Drainage Kit w/ P4-PS Stainless Steel Perforated Grate - Bottom Outlet

    ZURN Z884 Drainage Kit w/ P4-PS Stainless Steel Perforated Grate - Bottom Outlet

    Regular price From $548.43 USD
    Regular price Sale price From $548.43 USD
    Unit price /  per 
  • HYDROPLUS - 461 ductile iron grate Class E

    ULMA HYDROPLUS with Ductile Iron Slotted Grate (461D) Class E

    ULMA HYDROPLUS with Ductile Iron Slotted Grate (461D) Class E

    Regular price From $210.46 USD
    Regular price Sale price From $210.46 USD
    Unit price /  per 
  • U100KX-438 ULMA Channel with Reinforced 438 Wedge Wire Grate

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

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

    Regular price From $517.77 USD
    Regular price Sale price From $517.77 USD
    Unit price /  per 
  • ULMA M100KX stainless steel edged polymer concrete channel with 450 stainless steel slotted grate

    ULMA M100KX Kit with 450 / IN100KCA Stainless Steel Slotted Grate

    ULMA M100KX Kit with 450 / IN100KCA Stainless Steel Slotted Grate

    Regular price From $427.68 USD
    Regular price Sale price From $427.68 USD
    Unit price /  per 
  • POLYCAST®500 Series Kit w/ DG0655R Wedge Wire Grate | Load Class C

    POLYCAST®500 Series Kit w/ DG0655R Wedge Wire Grate | Load Class C

    POLYCAST®500 Series Kit w/ DG0655R Wedge Wire Grate | Load Class C

    Regular price From $944.03 USD
    Regular price Sale price From $944.03 USD
    Unit price /  per 
  • ULMA HYDRO PLUS with ULMA 410 Galvanized Steel Slotted Grate-Class A

    ULMA HYDROPLUS with 410 / GP100KCA Galvanized Perforated Tread Grate Class A

    ULMA HYDROPLUS with 410 / GP100KCA Galvanized Perforated Tread Grate Class A

    Regular price From $131.30 USD
    Regular price Sale price From $131.30 USD
    Unit price /  per 
  • ULMA U100KX with Stainless Steel Edge and Stainless Steel Slotted Grate

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

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

    Regular price From $380.58 USD
    Regular price Sale price From $380.58 USD
    Unit price /  per 
  • POLY700-PE-646R

    POLYCAST®700 Vinyl Ester Kit w/DG0646R Reinforced Perforated Galvanized Grate-HDPE Frame

    POLYCAST®700 Vinyl Ester Kit w/DG0646R Reinforced Perforated Galvanized Grate-HDPE Frame

    Regular price From $836.68 USD
    Regular price Sale price From $836.68 USD
    Unit price /  per 
  • Iron Age 5x20 Oblio Cast Iron Grate - BoOF

    Iron Age IA-OBLIO-0520-BF Class B OBLIO Cast Iron 122mm x 500mm Grate - BoOF

    Iron Age IA-OBLIO-0520-BF Class B OBLIO Cast Iron 122mm x 500mm Grate - BoOF

    Regular price $223.08 USD
    Regular price Sale price $223.08 USD
    Unit price /  per 
  • ULMA U100KX Polymer Concrete Channel with Stainless Steel Edging and Wedge Wire Grate

    ULMA U100KX Kit with TDS 436 Stainless Steel Wedge Wire Grate

    ULMA U100KX Kit with TDS 436 Stainless Steel Wedge Wire Grate

    Regular price From $393.62 USD
    Regular price Sale price From $393.62 USD
    Unit price /  per 
  • Ulma Hydro Mini Plus 495

    ULMA HYDROPLUS Mini with 495/PNH100KCAM Slotted HP Grate Class A

    ULMA HYDROPLUS Mini with 495/PNH100KCAM Slotted HP Grate Class A

    Regular price From $125.50 USD
    Regular price Sale price From $125.50 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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