NDS Dura Slope

NDS Dura Slope

Channel Length : 4′ (48”)
Channel Width (OD) : 6-5/8″ (ID): 4″

Priced per foot


NDS Dura Slope


  • Easier handling and installation than concrete systems
  • 7% pre-sloped channels maintain optimal flow rates
  • HDPE material offers high chemical resistance and durability
  • ProFit™ locking system locks grate to integral frame for stability
  • Channels come numbered with arrows for easy install
  • Components join together without couplers
  • Drain from end of outlet or built-in bottom outlet
  • Multiple channel depth and grate options available

When it comes to plastic trench drains, the NDS Dura Slope Trench Drain system is the most customizable and dependable. It’s continually the go-to drainage solution for driveways, parking areas, warehouses, loading docks, pools, wash-down areas, athletic fields, and other areas that experience surface run-off. Durably made from HDPE, the NDS Dura Slope system offers the strength of a concrete trench system without the costly installation. Instead, this modular system uses interlocking 0.7% sloped and neutral channels–no couplers required.

Simply choose amongst its many design, color, and size options to create a custom trench drain system that meets the drainage needs of your residential, commercial, municipal, or industrial property.

Easy to Install

The system’s lightweight modular components allow for easier handling and installation. Each channel has a tongue and groove connection with tabs that hold the channels together. In addition, the pieces are marked with numbers and arrows to avoid mistakes during install. LeveLoc™ re-bar supports on the side hold the rebar in place too.

The Dura Slope catch basin with optional trash bucket also locks in with the same tongue and groove connection. For this system, you only need screws to secure the grates and cap off the outlets that aren’t in use. Compared to installing a traditional concrete system, installing this plastic trench drain system is budget-friendly and fast.

Variety of Grate Options Available

The Dura Slope system offers NDS’s widest selection of grating, including ADA-compliant and heel-proof options. Its plastic grates come in two patterns and seven colors–black, white, gray, dark gray, green, sand and brick red. They are rated for pedestrian and light traffic use.

Dura Slope galvanized and stainless steel grates have a pedestrian and heavy traffic load rating. These materials resist corrosion and are easy to sanitize. They work great in industrial and sanitary applications like chemical plants or breweries. Other options include cast iron, ductile iron, and decorative ductile iron. When used with the optional ductile iron frame, the cast and ductile iron grates provide a Class D load rating. They allow for heavier traffic like forklifts, making them a great option for warehouses, factories, and shipping companies.

EZ Track Radius Couplings

Add EZ track radius couplings to your Dura Slope system for radius, perimeter, and circular applications. They were designed specifically for draining running tracks but also work great to drain around pools or enclosures. These flexible radius couplings allow 3 degrees of deflection between sections, so you can easily create the radius you need. All components snap into place, eliminating the need for special tools.

Channel Length 4′ (48”)
Channel Width (OD) 6-5/8″
Channel Width (ID) 4″
Outlet Sizes 4″ S&D, 4″ Sch. 40
Available Slope 0.7%
Max. Flow Rate 70 GPM, per foot


This product is priced per linear foot.


Installation guide
Channel Specifications

Plastic Grates DS-670 Spec Sheet
Cast Iron Grates DS-231 DS-232
Galvinized Steel Grates DS-221 Spec Sheet

Decorative Grate Spec Sheet
Decorative Grates Brochure

Case Study: Tracks
Case Study: Airport
Case Study: Stadium
Case Study: Pool

Product Catalog

Installation Guide

Installation Cut Sheet

Grate Specifications

Dura slope trench drain grate plastic perforated DS-670-DS-671
Dura slope trench drain grates cast iron parts DS-231-DS-232
Dura slope trench drain grates plastic parts 660-661-661LG-662-663-664-665
Dura slope galvinized steel grate part 221
Dura slope decorative grates catalog tech specs

Decorative Grates

Dura slope decorative grates brochure
NDS Dura slope decorative catalog
NDS Dura slope grates catalog

Channel Specifications

Pool and Circular

Case Studies

High school track case study
Airport case study
Stadium case study

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