Muddawg, are you talking about Jakes post about the clean room plastic and extension poles?
This setup allows you to setup an isolation room, say you are doing a clean out on an attic and have to come
through the hallway or a room upstairs to a window or vac truck. This allows you to setup an isolated room to
prevent airborne particles from floating all through the house.
I am simplifying of course, there are airflow considerations and lots of other things, but the extension poles
and this setup can make it much easier to setup a room of that type for work needs, whether doing a clean out
or whether you are renovating a room in your house and want to contain drywall dust and debris, etc....
Of course if that wasn't what you were referring to disregard this whole post.
Justin