It should cover 11x14 nicely, and also be useful for 4x5 if you have enough bellows on your 4x5. I use the 360mm focal length a lot in my studio for 4x5 transparencies of products.
The data is available here, Schneider recommend 240mmx300mm format, or 10"x12" which is short of 11"x14". Image circle is 491mm, it's also listed as only 70 degree all the smaller Apo Symmar lenses are 72 degree.
So it probably covers but with very little room for movements.