Thanks Rudy, We will check with an industrial rental company and get
the filter.
We fianlly had to tell them to leave. They actually started to sand for
the third tme! We strongly suspect that they were on something. It was
a learnig experience. We have built 2 homes and never had this problem.
Sometimes people have to cut their losses and walk away. Angry...of
course, but we will get over it.
Thanks very much Rudy, for the information.