8x8 Post Cap │ White Flat Top

Eight by eight White Flat Top deck Post Cap for wooden posts.

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A deck that is anchored with 8x8 posts will need to have distinctive 8x8 post caps because there is no escaping the dramatic impact that a post that size exudes. Our white flat top series 8x8 post caps will enhance the visual appeal of your landscape. Try to imagine yourself sitting on your deck while enjoying the beauty of your yard - with or without a plant sitting on top of your capped post.  The flat top matches the look of long deck rails and is functional as well as beautiful.

View our installation instructions here.

8x8 White Flat Top Post Cap

  • Comes in Nominal (7.5" x 7.5" up to 7.75" X 7.75") and Actual (8.0" x 8.0" up to 8.5" x 8.5")

  • These caps slide down the post about 3" and are 11" at their widest point.

  • 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.

  • Contractor and bulk pricing available!

Our American made ASA resin plastic caps for fence posts are made of the same hard plastic material that automobile makers use. It’s prized for its strength and durability. But its UV and impact resistance add to its appeal. ASA resin deck post caps will not get discolored or warped, and they won’t fade, either. We offer every customer who buys our ASA resin plastic caps for fence posts, a 10-year guarantee against discoloration, fading, and warping.

Our ASA resin 8x8 post caps are superior to comparable wood deck post caps because unlike wood, the hard plastic doesn’t expand and contract with humidity fluctuations. Over time, that movement will cause wood to weaken. Wood can also rot or get moldy if it stays wet for too long, and gnawing insects can hasten its erosion. 

These plastic caps for fence posts come in two sizes: True (Actual), and Standard (Nominal). 

  • The true (actual) 8x8 post caps will fit posts that are between 8” x 8” and 8.5” x 8.5”.
  • The standard (nominal) 8x8 post caps will fit posts whose measurements lie between 7.5” x 7.5” and 7.75” x 7.75”.

Our ASA resin deck post caps cost a fraction of what you’d pay for comparable wood models. You won’t have to do any maintenance like repainting or resealing them. And they last much longer than wood post caps.

We are the only company in the industry that has a patent on their ASA resin plastic caps for fence posts. We patented our revolutionary SNAP-CAP installation technology. You won’t need to hire a professional to help you install our deck post caps.

Frequently Asked Questions


Other sizes in the same style and color can be viewed here: