DUBLIN, Oct 29 (Reuters) - The world's largest cardboard box maker Smurfit Westrock SW.N cuts its full-year core profit forecast on Wednesday as weak demand forces it to implement additional downtime in its factories in the fourth quarter.

The company expects full-year adjusted earnings before interest, taxes, depreciation, and amortization (EBITDA) of between $4.9 billion and $5.1 billion, versus the previous $5.0 to $5.2 billion range that would have represented annual growth of 6% to 11%.

Smurfit also reported third-quarter core profit of $1.3 billion, in line with its guidance but below the average 1.32 billion forecast of nine analysts cited by LSEG SmartEstimate.

(Reporting by Padraic Halpin; Editing by David Holmes)

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