De or het orderformulier?

The correct Dutch article is:

het orderformulier

How to use orderformulier

the orderformulierhet orderformulier
this orderformulierdit orderformulier
that orderformulierdat orderformulier
our orderformulierons orderformulier
your orderformulierjouw orderformulier
every orderformulierelk orderformulier
which orderformulier?welk orderformulier?
a big orderformulier / the big orderformuliereen groot orderformulier, het grote orderformulier