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4x4 Fence & Deck Post Caps (3.5" Nominal)

Deck post caps to protect from moisture and rot
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updated February 23, 2026

Description

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Fence Post Cap

  • Designed to fit a 4x4 post with a 3.5" x 3.5" nominal size. 

  • Secures with 2 screws

6x6 Version Can Be Found Here 

⚠ Wood swells and shrinks inconsistently. Please measure your post first and compare it with the measure tool, scale up and down to your needs. 


Disclaimer

I'm not a professional model designer; I do my best to make models and prints as high-quality and accurate as possible for my own purposes. I hope anyone recreating it enjoys the results too! If you run into issues, please don't hold it against me—constructive feedback is always welcome, and if there’s something I can improve, I’ll do my best.

If you print or modify this model, I’d love to hear about it! Good luck printing!

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The author marked this model as their own original creation.

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