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Collection: Class D

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D & L Foundry (2 products)
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ULMA (13 products)
USF (1 products)
TDS (Trench Drain Systems) (51 products)

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Residential (106 products)
Decorative (20 products)
Sports Complex - Recreational (55 products)
Chemical Processing (30 products)
Food Processing (26 products)
General Purpose Drainage - Interior (139 products)
General Purpose Drainage - External (155 products)
Transportation (70 products)

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900 Series (3 products)
3000 Series (Replacement Parts Only) (2 products)
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FE0600 (2 products)
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Foundry (5 products)
FP0600 (2 products)
FP1200 (Replacement Part Only) (2 products)
HYDROPLUS (2 products)
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M100K (1 products)
M100KX (1 products)
M100V (1 products)
MultiV+200D (2 products)
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MV+200KX (2 products)
Point Drain (1 products)
POLYCAST 500 (18 products)
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SS0600 (3 products)
U100K (2 products)
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Class D (171 products)

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4.75" x 4.75" for NDS Pipe Adaptors (1 products)
4.81" for ULMA (9 products)
5.00" (1 products)
5.25" (103 products)
5.25" for Hubbell Polycast (3 products)
6.00" for NDS DuraSlope (32 products)
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9.0" x 9.0" for NDS 900 Series (3 products)
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0.75" (153 products)
1.125" (3 products)
1.50" (13 products)
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171 products

POLYCAST DG0641D Class D Slotted Ductile Iron Grate 6" x 24" (Nominal)

POLYCAST DG0641D Class D Slotted Ductile Iron Grate 6" x 24" (Nominal)

Regular price $49.31 USD

Regular price Sale price $49.31 USD
Unit price per
RG-151224-AB Heavy Duty Ductile Iron Slotted 12″ x 24″ x 1.5″ Grate | TDS

RG-151224-AB Heavy Duty Ductile Iron Slotted 12″ x 24″ x 1.5″ Grate | TDS

Regular price $217.44 USD

Regular price Sale price $217.44 USD
Unit price per
USF 6235 Slotted Gray Iron 24" X 24" Catch Basin Grate | Load Class D

USF 6235 Slotted Gray Iron 24" X 24" Catch Basin Grate | Load Class D

Regular price $485.30 USD

Regular price Sale price $485.30 USD
Unit price per
RG-151424-AB Heavy Duty Ductile Iron Slotted 14" x 24" x 1.5" Grate | TDS

RG-151424-AB Heavy Duty Ductile Iron Slotted 14" x 24" x 1.5" Grate | TDS

Regular price $257.04 USD

Regular price Sale price $257.04 USD
Unit price per
POLYCAST 600 Series Kit with DG0675HD ADA Transverse Slotted Ductile Iron Grate

POLYCAST 600 Series Kit with DG0675HD ADA Transverse Slotted Ductile Iron Grate

Regular price From $223.24 USD

Regular price Sale price From $223.24 USD
Unit price per
POLYCAST DG0675HD Class D HP ADA Transverse Slotted Ductile Iron 5.19" x 24" Grate

POLYCAST DG0675HD Class D HP ADA Transverse Slotted Ductile Iron 5.19" x 24" Grate

Regular price $60.35 USD

Regular price Sale price $60.35 USD
Unit price per
J-4221-01 Heavy Duty Cast Iron 10" x 24" x 1.5" Grate | D&L Foundry

J-4221-01 Heavy Duty Cast Iron 10" x 24" x 1.5" Grate | D&L Foundry

Regular price $145.50 USD

Regular price Sale price $145.50 USD
Unit price per
DG3043D Class D ADA Compliant Transverse Slotted Ductile Iron 8"x24"x1.5" Grate

DG3043D Class D ADA Compliant Transverse Slotted Ductile Iron 8"x24"x1.5" Grate

Regular price $72.09 USD

Regular price Sale price $72.09 USD
Unit price per
TP0650S (Shallow) Catch Basin Kit w/ DG0641D for POLYCAST®

TP0650S (Shallow) Catch Basin Kit w/ DG0641D for POLYCAST®

Regular price $302.81 USD

Regular price Sale price $302.81 USD
Unit price per
POLYCAST® 600 Vinyl Ester Series Kit with DG0641D Slotted Ductile Iron Grate

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

Regular price From $314.10 USD

Regular price Sale price From $314.10 USD
Unit price per
NDS DS-603-BF Class C Tile Ductile Iron 6" x 24" Grate - BoOF

NDS DS-603-BF Class C Tile Ductile Iron 6" x 24" Grate - BoOF

Regular price $153.48 USD

Regular price Sale price $153.48 USD
Unit price per
TDS 462G Class D Slotted Ductile Iron Grate

TDS 462G Class D Slotted Ductile Iron Grate

Regular price $46.49 USD

Regular price Sale price $46.49 USD
Unit price per
NDS® DS-232 Class D ADA-Compliant Slotted Ductile Iron 6" x 24" Grate

NDS® DS-232 Class D ADA-Compliant Slotted Ductile Iron 6" x 24" Grate

Regular price $94.81 USD

Regular price Sale price $94.81 USD
Unit price per
NDS 9" Catch Basin Kit with NDS Slotted Grate | Ductile Iron

NDS 9" Catch Basin Kit with NDS Slotted Grate | Ductile Iron

Regular price From $220.29 USD

Regular price Sale price From $220.29 USD
Unit price per
TDS DG3042D Class D Slotted Ductile Iron 8" x 24" Grate

TDS DG3042D Class D Slotted Ductile Iron 8" x 24" Grate

Regular price $76.15 USD

Regular price Sale price $76.15 USD
Unit price per
NDS DS-609-BF Class D Deco Slot Cast Iron 6" x 24" Grate - BoOF

NDS DS-609-BF Class D Deco Slot Cast Iron 6" x 24" Grate - BoOF

Regular price $153.48 USD

Regular price Sale price $153.48 USD
Unit price per
NDS 913 Class C Slotted Cast Iron 9" x 9" Grate

NDS 913 Class C Slotted Cast Iron 9" x 9" Grate

Regular price $161.57 USD

Regular price Sale price $161.57 USD
Unit price per
NDS 9" Low Profile Catch Basin Kit with NDS Slotted Grate | Ductile Iron

NDS 9" Low Profile Catch Basin Kit with NDS Slotted Grate | Ductile Iron

Regular price From $214.40 USD

Regular price Sale price From $214.40 USD
Unit price per
TV0650S (Shallow) Catch Basin Kit w/ DG0675HD for POLYCAST®

TV0650S (Shallow) Catch Basin Kit w/ DG0675HD for POLYCAST®

Regular price $460.19 USD

Regular price Sale price $460.19 USD
Unit price per
TV0650S (Shallow) Catch Basin Kit w/ DG0641D for POLYCAST®

TV0650S (Shallow) Catch Basin Kit w/ DG0641D for POLYCAST®

Regular price $449.16 USD

Regular price Sale price $449.16 USD
Unit price per

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Resources

Shipping / Returns

Determining Your Grate Size

Load Class Chart

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
~~$237.16~~ $183.00
ULMA HYDROPLUS Mini w/ FERN Ductile Iron Grate Class C
~~$237.16~~ $183.00
ULMA HYDROPLUS Mini w/ CATHEDRAL Ductile Iron Grate Class C
~~$237.16~~ $183.00

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