Answer a Question about Blindsgalore Faux Wood Shutters: 3 1/2" Louvers

I have double hung windows in my bedroom. I wanted to get bifold faux wood shutters. I have them in one bedroom and also in my dining room. One side of the bifold is 34", total window opening width is 69". Do you not build bifold shutters to fit any other size windows other than what your info provides? My window that I want shutters is 70" wide and 57 3/4 tall. I know these shutters were put in before I purchased the house. I don't understand why you do not make them to fit any size window. Anyway, if you can let me know the solution to my needs, I would appreciate it.