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Federal Mahogany Post Caps by Nantucket Post Cap

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Since 1988, The Nantucket Post Cap Company has been creating fine post caps and other high quality outdoor products.  Rounding out their post cap line with the new Federal Mahogany Post Cap, this cap will provide years of protection to your posts.  Made from 100% Mahogany.

Federal Mahogany Post Cap:

  • Fits posts from 3-1/2" x 3-1/2" up to 9" x 9"
  • Available in specialty sizes of 3-1/2" x 5-1/2" and 4" x 6" 
  • Also available in custom specialty sizes - please call or email for pricing

How to choose the correct Mahogany 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.


Federal Mahogany Post Caps usually ship within 2-7 business days.

Please see our return policy for additional details.