Upgrade your kitchen sink drainage with the Plumb Pak Flex N Fix 1-1/2 in. D x 12 in. L Polypropylene Extension Tube. This three-piece, white polypropylene extension kit is designed to simplify drain alignment and seal integrity without the corrosion risk of metal pipes.
Tailored for easy installation
With a slip joint connection and included washers, this extension tube delivers a reliable, leak-resistant fit right out of the package. The three-piece design lets you assemble the exact length needed to bridge gaps between the sink drain and the P-trap, reducing plumbing headaches during replacements or remodels.
Why polypropylene for kitchen drains
Polypropylene is lightweight, durable, and resistant to the mineral buildup and corrosion that metal pipes can face in a busy kitchen. The white finish blends seamlessly with standard sink plumbing and is easy to clean.
Key specs at a glance
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Diameter: 1-1/2"
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Length: 12"
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Material: Polypropylene
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Pieces: 3
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Connection type: Slip joint
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Color: White
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Application: Kitchen sink drain
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Washers included: Yes
Ideal use scenarios
- Replacing a damaged tailpiece or extending a misaligned drain line during kitchen sink renovation.
- In tight under-sink spaces where metal piping would be cumbersome or prone to corrosion.
- As part of a flexible, quick-install solution that minimizes downtime when updating plumbing fixtures.
Tips for smooth installation
- Ensure the existing drain and P-trap are clean and free of debris before assembling.
- Align the extension tube so the slip joints seat fully and evenly; tighten the nuts by hand then snug with a wrench—do not overtighten.
- Use the included washers on both ends of the extension tube to ensure a watertight seal.
