My log home faces SE. On that wall I have 2 windows openings that need to be replaced. Both openings are 6 feet X 6 feet. There are 4 windows in each opening. 2shade windows on the bottom (2X3ft) and 2 non opening windows on top (4X3 ft). The windows are separated by a wood post of sorts that form a cross hair in the window. Wife wants 2 side windows and one center window. Question:is the center post of the window a wall support? Thanks