Actual vs Nominal ?


Atlanta Post Caps makes and sells a variety of 4x4 post caps. Our multi-functional 4x4 deck post caps will protect your wood fence posts, incorporate decorative elements to enhance the overall look and feel of your landscape, create a dramatic impact with pops of color, and allow you to enjoy your property without ever having to worry about maintenance.

Most of our 4x4 deck post caps come in two sizes: Nominal and Actual. Nominal fence post toppers fit most 3.5” x 3.5” wooden fence posts, while our Actual post caps fit wooden fence posts that are true to size - or 4” x 4”.

Our line of post caps is superior to wood fence post caps in every way. We offer 4x4 post caps that are made of ASA resin, PVC, aluminum, and handcrafted stained glass.

  • ASA Resin Plastic Post Caps are made in the U.S.A. They bear the Atlanta Post Caps label and are guaranteed against UV-related discoloration, fading, and warping for three years. ASA Resin wood fence post caps have a patented SNAP-CAP installation method. The Slim Profile Series, the Estate Series, and the Plateau Series are plastic post caps that are made from ASA resin.
  • Aluminum Fence Post Caps come with a one year warranty against fading. Our metal post caps come with two pre-drilled holes and screws that go into the holes. The color of our aluminum wood fence post caps comes from a powder coating.

ASA Resin 4x4 Deck Post Caps

  •  Slim Profile Series 4x4 Post Caps (Nominal)

Our slimline 4x4 deck post caps are the most economical plastic post caps we sell. They’re only available in the nominal size. These plastic post caps will fit wood posts with dimensions between 3.5” x 3.5” and 3.75” and 3.75”. They’re made of ASA Resin and come in black, brown, cedar, and white.

  •  Pyramid Estate Series 4x4 Wood Fence Post Caps (Nominal)

Our pyramid 4x4 post caps are ASA resin plastic post caps. They’re designed to fit wood fence posts that are between 3.5” x 3.5” and 3.75” x 3.75”. The pyramid-shaped fence post toppers come in black, brown, cedar (a redder shade of brown), olive green and white.

  •  Pyramid Estate Series 4x4 Post Caps (Actual)

Pyramid-shaped 4x4 post caps in the actual size will fit wood posts that are between 4” x 4” and 4.6” x 4.6”. These actual (or true) wood fence post caps will fit vinyl sleeves and Trex posts, too. These pyramid plastic post caps come in black, brown, cedar, and white.

  • Plateau (Flat Top) Series 4x4 Deck Post Caps (Nominal)

The nominal size of our 4x4 flat top hard plastic post caps is made of the ASA resin that we use for the slim profile and estate series caps as well. The nominal flat top fence post toppers will fit wood posts that are between 3.5” x 3.5” and 3.75” x 3.75”. The flat top 4x4 post caps come in black, brown, cedar, and white.

  • Plateau (Flat Top) Series 4x4 Wood Fence Post Caps (Actual)

Flat top 4x4 plastic post caps fit posts whose measurements are between 4” x 4” and 4.6” and 4.6”. These flat top fence post toppers come in black, brown, and white.

Aluminum Estate Series 4x4 Wood Fence Post Caps

  •  Estate Series 4x4 Metal Post Caps (Nominal)

Our nominal 4x4 metal post caps will fit standard 3.5” x 3.5” wood posts. These metal post caps come in natural (colorless) aluminum, copper, white, and black.

  • Estate Series Aluminum 4x4 Deck Post Caps (Actual)

These 4x4 metal post caps fit an actual or true 4x4 wood post. The actual size 4x4 metal post caps is only available in powder coated black.

Solar Post Caps

Our 4x4 black metal deck post caps are designed to fit steel and aluminum fence posts and railings. The black aluminum 4x4 fence post caps come in three colors - powder coated black, bronze and white.

Dark bronze 4x4 solar post caps come in the nominal size and will fit posts that are 3.5” x 3.5”.

Black aluminum, black pebbled glass, the decorative Japanese garden lantern style decorative copper 4x4 post cap, and the 4x4 solar post caps with a copper finish come with an adapter that makes it possible for these post caps to fit nominal and actual size posts.

All solar post caps come with batteries, LED light bulbs, and screws to connect them to the fence posts.

Solar post caps charge their batteries with sunlight. As long as the fence post toppers get enough daylight to charge the battery, the light inside the post cap will turn on at dusk. A fully charged post cap may stay on for 10 to 12 hours.

Contact Atlanta Post Caps to find out more about our 4x4 deck post caps, about our Atlanta Post Caps branded post toppers, and the colors and styles we carry.