Deckorators 72210 Hatteras Flat Top post cap is a good option when you want a traditional accent for wood railing. The wide angles add interest and detail. 

Post cap fits a standard 4” x 4” wood post (actual measurements 3-1/2” x 3-1/2”). Inside dimensions: 3-5/8” x 3-5/8”.

Installation:

For easy installation, Deckorators recommends applying an exterior-grade silicone adhesive to the underside of the post cap and placing it firmly on the post. Deckorators Hatteras Post Caps are sold individually, and with a purchase of this high-quality product, Deckorators provides a 2-year limited-time warranty.

 Notes:

• Hatteras Wood Post Caps are ready to be treated with your choice of wood oil.
• Post caps must be treated, or cracking/splitting can occur.
• Oil should be used on all surfaces of the cap, inside and out.