Fixed or Picture replacement windows are non-operational. Fixed has a larger profile to match awning or casement windows. This also greatly improves the energy rating since the larger frame has room inside for many more chambers (dead air spaces). A picture window has a low-profile frame which won’t be rated as high but it maximizes the amount of glass your window will have so they’re great for matching sliders or for smaller sized windows where amount of viewing space is an issue. The professionals at Sunview Windows and Doors will advise you as to which style will give you the best end result.