tollesfilterroom2.jpg

The blower motor would have been bolted to the 2 rails, the filter on the far side of the T "A". A valve on the back of the lower T determines if air goes horizontally into the bottom of the filter, or vertically directly to the inside rooms without filtering. A valve up above at "B" determined if incoming air came from outside (the tilted pipe coming towards the camera) or the airlock (the tilted pipe coming from the far wall). A third valve at "C" detrmined if incoming air was directed to the decontamination room or into the building.

Photo album created with Web Album Generator