Apprentice question
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Flat-oval fittings are handed by their bend axis. If the fitting is made the wrong way, do not force it; coordinate a remake or approved transition workaround.
['Flat-oval duct is not symmetrical like round pipe. A fitting made to bend on the easy axis may not clear a condition that requires a hard-axis bend, and simply spinning it may not solve the geometry.', 'Check the shop tag, airflow direction, major/minor axis, and obstruction. The right fix is usually a shop remake, revised transition, or approved round-section workaround if schedule requires it and the foreman/detailer allows it.']