2-3/8" height x 2-1/4" top width (1-1/2" bottom width) Red oak rails are 3 ply solid. Other wood types are 3 ply finger jointed. Variety of matching handrail fittings available Installation tools and brackets also available Notes: Rails over 8 feet require LTL Freight shipping 8' handrails are 95". 4' handrails are 47".