4" PVC Outside Corner with Flat Edges Size:8ft + 2ft sections - for small parcel and the inside measurement is

and the inside measurement is about 12 ½" square

23-3/4" diameter x  7/8" thick with an opening 3-3/4"

both the capital and base are 3 ⅝” high

These Fypon Faux Wood Beams are made to suit any construction project

The deep-paneled divider trim is applied on-site at any height once the shaft is cut to size

4" PVC Outside Corner with Flat Edges Size:8ft + 2ft sections - for small parcel and the inside measurement isA true 1 x 3 " x 10 foot Cornerboard to butt up against fiber cement or other siding products. Made from CertainTeed or Versatex cellular PVC that can be cut, shaped, fastened and finished using standard carpentry tools. Weather resistant, with no warping. Does not require painting for protection but easily accepts paint to suit your color pallet. Available with either a smooth or wood textured finish.