The storms are attached on the outside and look normal, the opening is 29.5 x. 48, my windows are 28x 54 single hung Pella new construction ,how do i make these wrkIf you are installing these in an existing window frame, that will not work. The nailing fin is for installing against house framing. For installation in an existing window frame, you need replacement windows.
The windows are 28 x 54 and my opening is 29.5 x 48 so I need to adjust the framingkwikfishron said:You can cut off the nail flange. The more important issue is were the windows sized to fit within your existing frames of not.
Andersen Standard Sizes are CW14 which is 28 3/8"x48" you bought a window that has been known to rot