Hi Kelli, was this a project you were working on? How'd it go?

How big is the room?

Just an input from experience. I built (GC, electrician, plumber, finish carpenter, tile setter, and all around grunt) my previous house and it had 4-24 inch by 20 foot columns made from white pine. Don't use white pine. They were a maintenance nightmare. Even with all the proper ventilation. At the time of construction, 25+ years ago, correctly proportioned columns made from fiberglass or some other composite weren't available at a reasonable cost.

We just installed columns for a customer, they purchased the columns at Lowe's, the name of the column is Turncraft Colonial Fluted Column, 5 1/2" made out of pine. You can also try http://www.hbgcolumns.com/ they have a large column selection. Small tip when installing columns especially if you choose wood, make sure the center opening of the column is not blocked and there is space at top and bottom so there is unobstructed air flow, this way the moisture will not get trapped inside the column preventing the columns to rot from inside out. Good luck