How long can unexposed 4x5 film remain in its holder?

[Professional]

The same answers apply to that as apply to unexposed film.

I expected it but i thought maybe an exposed film lose its longevity over unexposed one, thanks

[DennisD]

I recently came upon several boxes of Tri-X which had been exposed in the mid 1980's. They were stored at room temp. Altogether, there were about 30 to 40 sheets requiring different development (N, N+1, N-1, etc.).

The film developed very well, albeit with some fog, but even that was not so bad. The negatives are all printable.

Dennis