What’s the best number of shutter panels for each window? For the most part, the the large the surface area of your window, the more shutter panels you’ll need. Our recommendation is to use one panel for windows up to 26” wide, two panels for windows up to 50” wide, and four for windows up to 98” wide.Single wide panels aren’t as room-friendly as two separate panels. Oftentime, wide panel shutters can’t fit flush against the wall because of their width. Multiple smaller panels resolve that.For any windows that you’ll open or shut regularly, you’ll be better suited with multiple panels, since they’re easier to open and get additional support from the shutter frame when you do operate them.