I live in upstate NY in a house that dates from c. 1925. I've been replacing light fixtures while suffering with antiquated wiring for far too long. I now have to replace an overhead light fixture in my bedroom and I want to replace the wiring from the switch box to the overhead ou...
The fan filter unit 5 is a high clean air introduction means installed on the ceiling to clean air from the outside into highly purified air and, after that, to introduce the air as a downward laminar flow into the mini-environment space 3. The fan filter unit 5 is provided with a ...