We can advise you if we have a roof to fit your window if you supply us with the following dimensions.
"A" Outside Frame
"B" Projection of the window from the sheathing
"C" & "G" Flankers
"D," "E," "F" Center Window or Windows
"J" This is the measurement from the sheathing to the edge of the flanker. This is usually the thickness of the casing or J channel for siding plus a little more. This measurement is usually 1" - 2"
Angle of the flankers