The opening includes the clearances and fittings needed for installation and movement. Measuring only the visible door or outer furniture panel can give an incomplete picture.
What the observation tells you
Handles, hinges and ventilation provisions may occupy additional space. A replacement that matches the front width may still be unsuitable, and a repairer may need more access than ordinary use requires. Do not force a cabinet into a tight gap.
A useful next step
Use the model's full dimensions and installation requirements for replacement planning. For repair, describe the actual access restriction and provide safe measurements without dismantling the kitchen.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.