NDS channel drains and trench drains

NDS channel drains: what we stock

NDS channel systems we stock

Our stock list gives each NDS system by its grate width. NDS lists the channel body, which is wider. Both are below.

Dimensions and uses from NDS product pages. Mini, Spee-D and Pro channels cut to length with a saw.

Which NDS load class and grate does the job need?

NDS rates channel systems by load class, and the grate sets the class as much as the channel does. NDS bases the ratings on the channel encased in concrete and installed to its instructions. Some installs need a concrete collar.

NDS rates Dura Slope channel and grates for 61-175 psi. Adding the DS-200 ductile iron frame raises it to 326-575 psi.

Dura Slope trench drain

Dura Slope is NDS's HDPE trench drain for longer and heavier runs. Sloped sections fall 0.34" each, a built-in 0.7% slope, and neutral sections are flat. Sections are numbered and set in order. NDS gives a maximum run of 96' without neutral sections and 132' with one. A bottom outlet adapter ties into 4" SDR 35.

NDS catch basins and steel trench drain

NDS square catch basins collect runoff from lawns, downspouts, patios and walks, with a built-in sump that traps grit before the pipe. NDS makes the 9" and 12" basins in polypropylene and the 18" in HDPE. We stock 9", 12" and 18" square, plus grates, Spee-D basins, pop-up emitters, EZflow 4" pipe and backwater valves.

For wider openings we stock steel EZ drain in 6" x 4', 5' and 6', steel Ready Form in 8" and 12" x 4', and cast iron trench grate in 8"x24" and 12"x24".

What to order with channel drain

• End caps, end outlets or bottom outlets for each run
• SDR 35 or ASTM D2729 pipe and fittings to carry water to daylight, a catch basin or a dry well
• NDS Flo-Well dry wells where there is no storm line to tie into
• PVC cement for solvent-weld outlet connections

Questions about NDS channel drains

What is the difference between a channel drain and a trench drain?

The terms are mostly used interchangeably. NDS files both under one heading. In the trade, trench drain often means a wider, deeper or heavier-duty system, such as Dura Slope or steel trench, and channel drain the shallow lines used at patios and driveways. Both catch surface water through a grate and carry it to pipe.

What is the NDS 4-inch channel drain?

The NDS system closest to 4" is Spee-D. Its grates are 4-1/8" wide on a 4-3/4" wide, 3-3/4" high channel, in 4' or 10' lengths. The bottom outlet takes 3" and 4" fittings. NDS recommends it for moderate flows from driveways, patios and pool areas. Yankocy stocks it.

What is an NDS drain?

NDS (National Diversified Sales) makes plastic stormwater drainage, including channel drains, catch basins, dry wells and pop-up emitters. NDS was founded in 1972 and says it made the first plastic catch basin for landscape drainage. Yankocy stocks NDS channel drains, catch basins and the Flo-Well dry well wholesale.

How does a channel drain connect to pipe?

Through an end outlet or bottom outlet made for the system. Spee-D outlets take 3" and 4" fittings and are solvent welded. NDS connects Dura Slope to 4" SDR 35 with a bottom outlet adapter, or to 4" schedule 40 with a flexible coupling. Follow the NDS install guide.

Last updated November 2, 2026

Yankocy sells NDS channel drains, trench drains and catch basins wholesale to lumber, mason and landscape yards. Buying for your own home? Your local lumber or mason yard can order it for you.

NDS channel drains data sheets and sources

• NDS: Micro Channel Drains
• NDS: Mini Channel Drains
• NDS: Spee-D Channel Drains
• NDS: 5 in. Pro Series Channel Drains
• NDS: Pro Series Channel Drains
• NDS: Dura Slope Channel Drains and FAQ
• NDS: Load ratings
• NDS: Square catch basins

Related to NDS channel drains

• NDS Flo-Well dry well
• SDR-35 pipe
• Septic distribution boxes
• Septic tanks
• All drainage & septic