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NDS Dura Slope® Channel Drain System

NDS Dura Slope® Channel Drain System

Dura Slope® Channel Drain Slot Top Maintenance Unit, 6 in. Wide X 2 ft. Long, Asymmetric, Galvanized Steel

$768.92


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SKU DS-STMAINT

Get easy access for cleaning and maintenance inside Dura Slope® Channel Drains that use slot top grates by installing the removable Maintenance Unit. The galvanized steel box works with the slot top channel drain grate and can be lifted to access the Dura Slope channel to remove blockages which can affect drainage performance. Maintenance Units can be filled with bricks, concrete, or asphalt during installation to blend into the surroundings. They should be installed at the beginning and end of the drain run and at intervals of approximately 100 ft.

 

System Selection:

  • Scroll down to select your system components. Multiple channel units are connected together and then paired with accessories such as caps and grates. 

Note: NDS drainage products are subject to a $750 minimum order.


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View Our Full Selection of NDS Channel Drain Products →

Ordering Info:

Please scroll down for the complete Dura Slope® Series product listing with pricing. Not sure of the exact parts needed for your project? Please submit an NDS Channel / Trench Drain Quote Request >

Spec Sheets

Visit ndspro.com to download specification sheets and other technical information.

Shipping

  • All items ship for free (standard ground, see map)
  • Call: (800) 604-5537 for pricing and shipping questions. Shipping estimates shown on the map pertain to this specific product only.
  • Orders typically ship in 1-2 business days. Transit times displayed in the map are listed in business days, and are approximate. The day that the order is shipped is not counted as a transit day.
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Channel Drain System & Accessories (Free Shipping)

Please see the below product listing. Please note, accessories (grates, clips, caps, etc.) must be purchased with a channel /  trench drain system including channels and cannot ship alone.

NDS Dura Slope® Channel Drain System — Complete Buyer’s Guide, Install Steps & Case Study

Guide • NDS Dura Slope® Channel Drain System

NDS Dura Slope® Channel Drain System: The Practical Guide for Driveways, Parking Areas, Warehouses & Pool Decks

The NDS Dura Slope® Channel Drain System is a high-performance, modular trench drain with a built-in 0.7% slope. In plain terms: the channels are pre-sloped so water naturally moves toward the outlet—reducing on-site grading and speeding up installs. Lightweight sections snap together, and you can choose from a wide array of grates, frames, and accessories to match appearance and load needs.

NDS Dura Slope Channel Drain installed along a pool deck
Dura Slope® along a pool deck: continuous capture with a clean profile

Why Dura Slope®? (Technical Benefits in Simple Language)

  • Smart Sloped Design: Each unit has a 0.7% built-in slope to keep water moving—less manual grading, more predictable flow.
  • Lightweight & Modular: Snap-together sections with tongue-and-groove joints and alignment tabs help crews install fast and straight.
  • Flexible Depth Options: Invert depths roughly 4.75″ to 12.8″, plus neutral (flat) models when a level invert is required.
  • Versatile Grating: Plastic, galvanized or stainless steel, ductile or cast iron, decorative and slot styles—dial in the look and load rating.
  • Comprehensive Kits & Accessories: Order full kits (grates, locks, outlets, end caps) and add catch basins, cleanouts, radius couplings, and more.
  • Heavy-Duty Capability: UV-stabilized HDPE channel walls handle auto/light-truck loads. Add iron frame kits to boost capacity for forklifts and industrial traffic.
Completed NDS Dura Slope Channel Drain project at a commercial site
Finished install with decorative grate: performance without visual clutter

Best-Fit Applications

  • Driveways & Garages: Intercept sheet flow at thresholds and aprons.
  • Parking Areas: Manage runoff across long, flat slabs with minimal regrading.
  • Warehouses & Loading Zones: Upgrade with iron frames and higher-load grates where forklifts operate.
  • Pool Decks & Courtyards: Maintain drier, safer surfaces while keeping a low-profile aesthetic.

How to Specify Dura Slope® (Step-by-Step)

  1. Map the flow path: Identify the low edge where water travels naturally (ramp bottom, slab joint, deck perimeter).
  2. Choose depth & slope: Use the standard 0.7% pre-slope for most runs; switch to neutral segments where flat is required.
  3. Select grate & frame: Match style and load rating (plastic/steel/iron, decorative/slot). Add iron frames for forklift traffic.
  4. Plan outlets & cleanouts: End/bottom outlets to storm piping; include catch basins or maintenance units for debris access.
  5. Detail transitions: Use radius couplings for curves and alignment tabs for straight, consistent joints.
Crew installing NDS Dura Slope channel drain with snap-together sections
Snap-together sections speed alignment and reduce install time

Installation Overview (Pro-Friendly, DIY-Aware)

Translation: Pre-sloped channels do half the grading for you—set elevations, connect sections, encase, and tie into the outlet.
  1. Excavate & Bed: Trench for channel depth plus concrete bedding/encasement. Compact sub-base.
  2. Set Elevations: Start-to-finish heights should reflect the 0.7% built-in slope; use a laser level for accuracy.
  3. Assemble Channels: Snap tongue-and-groove joints together; use alignment tabs to stay straight. Keep grates in during pour to preserve geometry.
  4. Encasement: Concrete backfill per the load requirement (upgrade frames/grates for heavy traffic zones).
  5. Outlet & Maintenance: Connect to storm piping, add catch basins/cleanouts where needed, and seal joints per code.

Case Study: Warehouse Apron Upgrade Cuts Downtime

Site: 120,000-sq-ft distribution warehouse • Problem: Forklift routes crossed a flat loading apron that ponded during heavy rain, causing slip hazards and halting dock operations.

Solution: A Dura Slope® Channel Drain run using pre-sloped segments to deliver a consistent fall without re-sloping the slab. Designers specified iron frame kits and ductile-iron grates at dock doors, with decorative grates at public walkways. Catch basins were added every 60–80 ft for maintenance access.

  • Install window: Two weekend shifts to avoid weekday disruptions.
  • Outcome: No standing water during subsequent 1.5″ storm; dock downtime dropped to near zero.
  • Maintenance: Quarterly cleanouts via catch basins; grates lift quickly for debris removal.

FAQs

When do I choose neutral (flat) segments?

Use neutral channels where you must hold a level invert—e.g., over utilities, under door thresholds, or where outlet elevations are fixed.

Which grate should I pick?

Decorative or plastic for light pedestrian zones; galvanized/stainless for durability; ductile or cast iron for vehicle and forklift routes (pair with iron frames).

How often should it be cleaned?

Quarterly is typical. In heavy leaf/debris areas, increase frequency in fall. Add catch basins/cleanouts along long runs to simplify maintenance.

Spec Snapshot

  • Built-In Slope: 0.7% (pre-sloped); neutral models available
  • Depth Range (approx.): 4.75″ – 12.8″ invert
  • Channel Material: UV-stabilized HDPE
  • Grates: Plastic, galvanized/stainless steel, ductile/cast iron; decorative & slot styles
  • Frames (optional): Iron frame kits for higher load capacity
  • Accessories: Kits with grates/locks/outlets/end caps; catch basins, maintenance units, radius couplings
  • Typical Loads: Auto & light-truck; upgradeable for forklifts/industrial with frames & heavy grates
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