Floor mount prefabricated Square Newel post,complete with 9 crossbar holders, pre-welded base flange, cover flange, height adjustable handrail support.Material : Stainless steel AISI 304 grade for interior use. Satin Finish.  Post Dimensions : 1 9/16”x1 9/16” sq. welded base 3 15/16”x3 15/16” x15/64” thickness ,39 3/8” H,adjustable handrail support can be extended 2 1/2” more.Distance between center holes 4”.