Before I installed a simple boxed newel with Bristol stair railing and Gothic type balusters.
After I installed a plain stair post stained with Jacobean. The newel Post is 4 1/2 x 4 1/2 inches. Also installed wall railing. The whole project took two days. Need a trim carpenter for your stair project call The Finishing Company (804) 591-9869 . All estimates are free !