Measure 4 3/4” x 4 3/4” (Recess on the bottom 3 9/16" x 3 9/16" x 3/4" deep) For use with posts measuring 3 ½” x 3 ½”. MEASURE POSTS BEFORE ORDERING TO ENSURE CORRECT SIZE Made of solid red oak, for interior use only Unfinished; can be painted or stained Easy to install (slip over design) This simple, modern cap will give your newel post a finishing touch. Very easy to install with a Liquid Nail or other adhesive. It is made from one piece of wood, unfinished so you can paint or stain according to your taste.