For the column build you will need: Frame: 9 - 2x2x8's 4 - 1x2x8's Sheathing: 3 - sheets 4x8 (1/4" thick) CDX plywood (can substitute foamboard insullation if desired) Trim: 2 lengths of exterior grade 1/2 round trim 2 lengths of exterior grade moulding (lower trim) 2- 2x3x8 boards (middle and upper trim) Hope this helps with your build, sorry it took a bit, missed the earlier post somehow.