replacement fitting sketch: prevent a second mirrored or rotated remake fitting orientation & field verification replacement duct fitting sketch mirrored remake rotated wrong looking upstream downstream orientation sketch the replacement from a named viewing direction and mark airflow, top, upstream, downstream, connector types, control points, and fitting movement. make it impossible to read the sketch from the opposite side. i redrew the remake looking downstream, marked top and grid north, and showed the offset moving left. can you verify the orientation before the shop releases it?