Replacement Windows Discussion Board Forum

Please see attached picture of full window.
Some of the miters look reasonable, some not (on the same window).
What would you recommend for caulking?
Thank you.

Please see attached picture of the corner of Marvin Essential picture window, doesn't look right to me: quite large gap in the corner. Could it be related to installation or it is manufacturing defect? How bad it is for lifespan of the window?
Thank you.

No, there is actually a frame from 2"x4"s forming 12 cells where current windows are installed. The idea is to cut horizontal bars and install 4 windows for full height of 79".
Thanks.

Hello,

I am going to replace 4 x 3 windows wall with 4 large windows 45''x79''. What windows would you recommend in terms of frame material? I am a little bit concerned about structural integrity of windows wall.

Thank you.