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Front three-quarter view of NDS 1225 12 in. x 12 in. black sump box, showing tapered interior and 12x12 square opening for grate installation (professional drainage component).

NDS 1225 12 in. x 12 in. Sump Box — 12x12 Catch Basin

Brand: NDS
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$101.24
$75.93
SKU 1225

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The NDS 1225 12 in. x 12 in. sump box is a tapered catch-basin body designed to collect surface water and reduce debris entering your drainage system. Sized for standard 12" x 12" grates and compatible with the NDS 1220 valve box cover, the 1225 provides a dependable inlet for yard, landscape and light-traffic drainage installations.

  • Standard fit: Designed for use with 12" x 12" grates or the #1220 valve box cover for quick integration into 12-inch drainage layouts.
  • Universal outlet compatibility: Accepts NDS universal outlets—#1206, #1243, #1245, or #1266—for straightforward plumbing connections.
  • Durable construction: Manufacturer listings specify styrene construction with a black finish for long-term outdoor use.
  • Compact footprint: External dimensions are approximately 12-3/4" L x 12-3/4" W x 14-1/2" H, keeping excavation minimal while providing adequate sump volume.
  • Debris management: Tapered interior shape helps capture leaves and sediment and keeps larger debris from entering downstream piping.
  • Installation-ready: Works with a range of NDS grates, risers and accessories to match load and aesthetic requirements.

Before installation, review the manufacturer specification sheet and select a grate material and pattern that meets expected traffic loads. If you need help choosing the correct grate, outlet or riser height, consult the technical documentation included with the product or contact a qualified drainage professional. Technical literature and a downloadable drainage catalog are available from the manufacturer for detailed flow, load and installation guidance.

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Frequently Asked Questions

What are the exterior dimensions of the 1225 sump box?
Overall dimensions are approximately 12-3/4" L x 12-3/4" W x 14-1/2" H; consult the manufacturer's spec sheet for exact tolerances.
Which grates, covers and outlets fit this 12-inch sump box?
Fits standard 12" x 12" grates and the NDS 1220 valve box cover. Universal outlet parts #1206, #1243, #1245, and #1266 are compatible.
What material is the sump box made from and is it UV-stable?
Manufacturer listings indicate styrene construction with a black finish. For UV resistance and warranty details, review the NDS technical documentation.