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White NDS 9P10 PVC offset downspout adapter side view showing the rectangular 4"x6" downspout inlet and round 6" S&D hub outlet for drainage systems.

NDS 9P10 PVC Offset Downspout Adapter — 4" x 6" x 6"

Brand: NDS
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$50.05
$37.53
SKU 9P10
In Stock (13)

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Reliable PVC adapter for routing roof runoff into sewer-and-drain systems. The NDS 9P10 is an offset downspout adapter that aligns a 4" x 6" rectangular downspout to a 6" sewer-and-drain (S&D) hub, allowing the downspout to sit close to a building wall while connecting to standard round drainage pipe.

  • Material: Durable polyvinyl chloride (PVC) formulated for outdoor drainage use and UV resistance.
  • Connection sizes: Accepts a 4" x 6" downspout inlet and connects to a 6" S&D hub for round sewer-and-drain pipe.
  • Compatibility: Designed for SDR-35, SDR-26, Triple Wall and ASTM D-2729 pipe; not compatible with DWV Schedule 40 (ASTM D2665).
  • Performance: Intended for non-pressurized drainage systems; maximum working pressure is 5 PSI. Meets applicable ASTM standards for sewer-and-drain fittings.
  • Installation: Solvent-weld connection provides a secure, permanent joint for below-grade or wall-exit installations.

Made to NDS standards for reliable stormwater routing, the 9P10 offset adapter provides a compact, standards-compliant transition from rectangular downspouts to round S&D piping. Use this adapter when you need a low-profile solution that keeps the downspout flush to the wall while maintaining clear flow into the drainage system.

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Frequently Asked Questions

What sizes does the NDS 9P10 adapter connect?
Connects a 4" x 6" rectangular downspout to a 6" round sewer-and-drain (S&D) hub for standard drainage piping.
Is the 9P10 compatible with Schedule 40 DWV pipe?
No. The 9P10 is not compatible with DWV Schedule 40 (ASTM D2665); use SDR or the pipe types listed by NDS.
How is the adapter installed and sealed?
Install with solvent-weld connections for a permanent, watertight joint; intended for non-pressurized drainage applications.
What is the maximum working pressure for this adapter?
Designed for non-pressurized systems; the maximum working pressure is 5 PSI and it meets applicable ASTM standards.