Square Newel Post Zen-1 White Oak

Model : Zen-1

Dimensions : 3x3x42", 3x3x48", 3 1/2x3 1/2 x 42" 3 1/2x3 1/2x48"

Wood Type : White Oak

The groove at the top of the post is 1/8" wide and +/- 3/16" deep.