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6X6 Post Caps (Nominal) - Black Estate Series

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Remember: Click our 'Actual vs Nominal' size guide below to ensure you have the correct measurements.

Actual vs Nominal ?
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Actual vs Nominal ?

Product Description

Our most popular fence post cap, this model will fit a standard pressure treated post with widths of 5.5 inches up to 5.75 inches.  Our patented post caps come in two parts and install by attaching the base to the post with screws and snapping the top into place.  Designed to remain snug and secure under severe weather conditions, no screws are visible after installation.  We back up the quality of our product with a 10 year warranty against color fading from sun and UV damage.  Made from ASA resin, an automotive grade material most commonly used in car bumpers these post caps will last for decades.

Black Fence Post Caps for Pressure Treated 6x6 Posts

  • Fits a Standard (Nominal) post. (5.5" x 5.5" up to 5.75" X 5.75")

  • These caps slide down the post 1.5" and are 7.5" at their widest point.

  • 10 year guarantee against fading, discoloration and warping!

  • Made from 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.

  • Contractor and bulk pricing available!

     Frequently Asked Questions

 Order online or call 770-808-0200 to order by phone!


Product Videos

Atlanta Post Caps SNAP-Cap Installation Instructions 00:58

This video covers how to install our patented American made post caps. We back up the quality of our post caps with an industry leading 10 year guarantee against warping, fading and discoloration from UV.

  • Atlanta Post C...
    This video covers how to install our patented American made po...

Actual vs Nominal

*Be sure to measure - not all posts measure the same!*

Nominal generally refers to pressure treated wood.

4x4 Nominal fits 3.5" x 3.5" up to 3.75" x 3.75"
(The aluminum caps only fit 3.5" x 3.5")

6x6 Nominal fits 5.5" x 5.5" up to 5.75" x 5.75"
(The aluminum caps only fit 5.5" x 5.5")

8x8 Nominal fits 7.375" x 7.375" up to 7.625" x 7.625"

Actual generally refers to rough, untreated wood and vinyl or composite posts.

4x4 Actual fits 4" x 4" up to 4.6" x 4.6"
(The aluminum caps only fit 4" x 4")

6x6 Actual fits 6" x 6" up to 6.25" x 6.25"
(The aluminum caps only fit 6" x 6")

8x8 Actual fits 7.875" x 7.875" up 8.125" x 8.125"
(The aluminum caps only fit 8" x 8")