Post Extender (Quick-Fit, Oxide Red) is a fast, no-dig way to raise the height of an existing timber fence or gate post without replacing it. The heavy-duty steel collar sleeves over the original post and the quick-fit clamp locks it securely, creating a rigid extension point for new rails, panels or trellis. The durable oxide-red coating offers outdoor corrosion resistance and a tidy, professional finish.
Key Features & Benefits
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Extend Without Replacement: Increase post height quickly—ideal for adding privacy panels or trellis.
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Quick-Fit Clamp: Rapid tightening provides a secure, twist-resistant hold with minimal tools.
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Rigid Support: Robust box section helps restore strength to weathered posts.
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No-Dig Solution: Avoids disturbing existing foundations, paving or landscaping.
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Durable Finish: Oxide-red coating for long-lasting corrosion resistance outdoors.
Available Size
| Product Code |
To Suit Post Size (mm) |
To Suit Post Size (inch) |
| FPC50 |
50 × 50 |
2 × 2 |
| FPC75 |
75 × 75 |
3 × 3 |
| FPC100 |
100 × 100 |
4 × 4 |
75 × 75 3 × 3
Product & Technical Details
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Type: Post extender (quick-fit clamp)
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Material: Heavy-gauge steel
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Finish: Oxide-red coating (paintable)
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Fixing Method: Sleeve over existing post; tighten quick-fit clamp to secure
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Applications: Raising fence/gate posts, fitting trellis or additional rails, minor post repairs
Instructions for Use
- Check the existing post is sound and plumb; replace severely decayed timber.
- Slide the extender over the post until fully seated. Align to fence line.
- Tighten the quick-fit clamp evenly for a rigid, twist-resistant hold.
- Fix the new extension timber or trellis to the extender as required; re-check tightness after settling.
Limitations & Precautions
- Not a substitute for structural design where high wind uplift or lateral loads are present—assess the fence line accordingly.
- Ensure the existing post and base are sound; do not use on rotten or loose posts without repair.
- Treat any cut end grain on new timber with a suitable preservative.
A rapid, clean solution for increasing fence height and adding trellis—quick to clamp, corrosion-protected and ready to support new timber securely on existing posts.