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Great Point Wood Post Caps by Nantucket Post Cap

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The final product price may change based on the combination of size / type / finish / style you choose.

Great Point Flat Top Red Cedar or Redwood post cap.  Measurement of flat spot on top equals the actual width for the post.  For example, if a 3-1/2" x 3-1/2" cap is ordered, the flat spot on top is 3-1/2" square.

Fits nomial post sizes of 4x4, 5x5, 6x6, 7x7, 8x8, 9x9, and 10x10 - custom sizes available.

Molding depth: 1-5/8"

All Nantucket Flat Post Caps can be used in conjunction with a finial top (sold separately).

Great Point Post Cap:

  • Fits standard wood posts from 3-1/2" x 3-1/2" up to 10" x 10"
  • Perfect base for a finial decorative top (shown with Nantucket Ball Finial in additional images)
  • Comes in Western Red Cedar and Kiln-Dried Redwood
  • Also available in custom specialty sizes - please call or email for pricing

Some post cap sizes are special order items.  Please see shipping information below.

How to choose the correct post cap size:

Nantucket Post Cap LogoNantucket Post Caps are sized according to the actual physical measurement of your post.  All post caps are made 1/8" larger on the opening then the actual post size you specify.  For example, if your 4x4 standard post truly measures 3-1/2" x 3-1/2", then you would choose that size and your cap would come with an inside measurement of 3-5/8" x 3-5/8". 

All Nantucket Post Cap products are made in the U.S.A.


Post caps for 3-1/2" - 6" posts usually ship within 2-3 business days.  Larger sizes are special order and usually ship within 5-7 business days.

Please see our return policy for additional details.