4x4 Post Caps │Pewter Grey Flat Top

4x4 grey flat top post cap shown in actual 4" size

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$10.49 - $10.99

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                                                                                                                                            4x4 Pewter Grey Flat Top Newell Post Cap

Introduce a simple but effective addition of style to your home’s fences and borders with one or more of these post caps. 

These wood fence post caps are designed with a Gray flat top, blending in nicely with typical wooden fences and home borders. It has advantages over wooden alternatives, being more affordable, less likely to deform over time, and more likely to last you for years to come.

Made in the US from ASA resin, these post caps won’t bend, expand, or break when introduced to changes in the atmosphere or excessive moisture.

Boost the visual appeal of your fence with these post caps! Available in both nominal and actual sizes. 

View our installation instructions here.


  • Comes in Nominal (3.5” x 3.5” up to 3.75' x 3.75') and Actual (4.0 x 4.0 to 4.6 x 4.6) will fit many composite post

  • These caps slide down the post 1.5” and are 5.5” x 5.5” at their widest point.

  • Compatible with Trex Transcend, Trex Signature, and Trex Select Railing Systems

  • 10 year guarantee against fading, discoloration and warping!

  • High impact, remarkably sturdy ASA resin. The same material used in automobiles!

  • Made in the U.S.A.

  • Quick and easy patented SNAP-CAP installation, built right into the cap!

  • Fraction of the cost of comparable wood caps.

We also offer this color and size in a New England Style.

Frequently Asked Questions


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