Front roof frame panel dimensions marking procedure for Bluetooth microphone installation on Smart fortwo/forfour 450/451/452/454.

Diagram showing front roof panel with callout 12 indicating drilling location and detail view with measurement points a and b.

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See all Body & Interior figures for the Fortwo (450), or browse the full figure library. Part numbers and callouts are community-sourced and cross-referenced against the manuals — confirm with your VIN before ordering.