Help with a question about spring loaded windows

[horseshowmomnv]

A friend gave us a nice vinyl window, however it is too tall if we installed it vertically. Can we install a spring loaded window horizontally? What are the problems with doing so?
T

 

[haff]

On my windows th ere is a small removable pieced of plastic on the inside track. Behind it is the spring assembly. If you remove those you should be good to go.

 

[horseshowmomnv]

Thank you, I don't see anything on the track, thinking I can take the window out of the frame and maybe I can see the spring. This window is supposed to be a really high quality window. ( friends have a window replacement business). I guess I can ask them about it, I just hate bothering them.