Marvin can make a window that size. It is a lot higher quality then any vinyl.

Any manufacturer can make a bow that size.

Marvin is very nice but will be on the upper end of the price spectrum.

What type of windows are in the rest of the home?

Hi, and thanks for responding. Our old windows are 30 year old aluminum frame picture windows that were in the house when we bought it. We were hoping to replace at least the back of the house this year, but since we are currently updating our kitchen we thought we would start there. It has a small window and I thought a bow window would make the kitchen look larger and with casement side lites we could also have some ventillation. It is the casement that restricts some makers. The panes have to be so narrow that there is not enough room for the mechanism.

ask them if they can make a push out casement, this would not have a crank operator but utilize an older style casement sash adjuster(oper rod that the shoe glides on)