Step 3Construct the column boxes
iImage Information

Next I cut the other sheet of plywood into four 1'x8' pieces to use as the sides for the columns and adjusted their length by eyeballing how much I needed to conceal behind the column. I wanted to create a sloped roof for the column, as we have had ridiculous rain on several Halloweens, and I wanted to protect my wiring and stuff if we got any this year.
I first attached the 2x4's to the front of the column (leaving enough room for the thickness of the plywood) using drywall screws and gorilla glue.