De or het saldobrief?

The correct Dutch article is:

de saldobrief

This word is not in the word lists we use to double-check answers.

How to use saldobrief

the saldobriefde saldobrief
this saldobriefdeze saldobrief
that saldobriefdie saldobrief
our saldobriefonze saldobrief
your saldobriefjouw saldobrief
every saldobriefelke saldobrief
which saldobrief?welke saldobrief?
a big saldobrief / the big saldobriefeen grote saldobrief, de grote saldobrief