When a whole corner of the lawn floods or water sheets off a driveway, a 12 in. NDS catch basin gives you a bigger opening and more ways to route pipe. Each basin has two side openings plus a removable bottom cutout, and connects to 3 in. through 8 in. pipe with the right outlet adapter. This pack contains four kits.
What Comes in Each 12 in. Kit
- 1 NDS 12 in. square catch basin
- 1 grate: black or green
- 2 outlet adapters
- 1 outlet plug
4 kits per pack (1200BLKIT-4 or 1200GRKIT-4), about $63.75 per kit.
12 in. Catch Basin Specifications
| Basin size | 12 in. x 12 in. square |
|---|---|
| Openings | 2 side openings plus a removable bottom cutout (NDS also makes 3- and 4-opening 12 in. basins) |
| Material | Polypropylene (PP) treated with UV inhibitors |
| Outlet fit | Keyed side opening locks the adapter in for a soil-tight seal |
| Traffic | Light vehicle traffic when properly installed |
| Cleaning | Lift the grate and clear the sump |
Specifications: NDS Square Catch Basins (manufacturer product page and technical documents), checked September 2026.
Where a 12 in. Basin Fits Best
- Large low spots and lawn depressions
- Driveway and garage edges
- Where two or more pipe runs meet
- Hardscape areas with heavier runoff
Setting a 12 in. Basin in a Low Spot
- Find the lowest point and dig so the grate finishes flush with the grade.
- Open the outlet cut-outs you need and fit adapters; plug unused openings.
- Slope pipe away to daylight, a storm drain or a dry well.
- Compact soil around the basin before setting the grate.
Video: NDS, "How to Install a Catch Basin."
For a single downspout or a tight planter bed, the smaller 9 in. catch basin 4-pack is usually enough. To move the water long distances without gravel, connect an EZ-Flow French drain.
Shipping
Shipping is $50 per 4-pack by common carrier, and orders over $2,000 (8 or more 4-packs) ship free. Most orders ship within 4 business days and arrive in 3 to 6 business days.
12 in. Catch Basin Price & Cost
The 4-pack is $255, or $63.75 per kit. Shipping is $50 per 4-pack, so one 4-pack is $305 delivered ($76.25 per kit). Orders over $2,000 ship free: 8 or more 4-packs (32 kits) come to $63.75 per kit delivered.
Buying seven 4-packs? Seven cost $2,135 delivered ($1,785 + $350 shipping), while eight cost $2,040 with free shipping, so the eighth pack lowers your total by $95.
Other Sizes & Alternatives
Draining a downspout or a planter bed?
The NDS 9 in. catch basin 4-pack is the compact option at $214.50 for four kits.
Water sheeting across a driveway or patio?
A channel drain catches water along a line instead of at one point: see the NDS 864 Pro Series channel drain kit with galvanized grate or the 9-pack for bulk orders.
No downhill outlet for the pipe?
Run the pipe to an NDS Flo-Well dry well, or spread the water through the soil with an EZ-Flow gravel-free French drain.
Ordering 25 or more 4-packs?
For contractors, developments and municipal projects, request a quote with your delivery ZIP code and grate color. We quote freight and delivery to your site, and tax-exempt orders are welcome.
Downloads & Resources
- 12 in. catch basin landscape installation detail (NDS, PDF)
- 12 in. catch basin pedestrian and vehicular traffic installation detail (NDS, PDF)
- 12 in. catch basin riser and drain installation detail (NDS, PDF)
- Catch basin, grate and outlet flow capacities (NDS, PDF)
- Catch basin and adapter invert table (NDS, PDF)
- NDS drainage product catalog (PDF)
- NDS 12 in. square catch basin specifications
Frequently Asked Questions
What is the difference between a yard drain and a catch basin?
A yard drain is any grated inlet that takes surface water into a pipe. A catch basin is a yard drain with a box and a sump: debris settles in the sump instead of clogging your drain pipe.
How many outlets does the 12x12 catch basin have?
Two side openings plus a removable bottom cutout. The kit includes two outlet adapters and a plug. If you need to run pipe in three or four directions, NDS makes 3- and 4-opening 12 in. basins (sold separately).
How much water can a 12 in. catch basin handle?
NDS rates its 12 in. square plastic grates at about 155 gallons per minute with 1/2 in. of water over the grate, and each standard #1243 outlet at about 78 gallons per minute.
What pipe sizes does the 12x12 catch basin fit?
The kit's two outlet adapters fit 3 in. and 4 in. pipe. With NDS outlet adapters sold separately, the 12 in. basin also connects to 6 in. and 8 in. pipe.
Can a 12x12 catch basin be raised to meet grade?
Yes. NDS makes a 6 in. riser (#1216) for the 12 in. square catch basin for deeper installs.
Should there be standing water in a catch basin?
A little water can sit in the sump below the outlet. If water stays above the outlet, the pipe downstream is likely clogged or has too little slope.
Can you drive over a 12x12 catch basin?
It is suitable for light vehicle traffic when properly installed, so it works at driveway and garage edges. Follow the NDS pedestrian and vehicular traffic installation detail (PDF).