This used Brew vacuum furnace chamber has a 2.5" Dia. and a 8" long hot zone. We think the hot zone is made of Tungsten or Moly. It is cooled by a copper cold wall and there are copper cooling lines around the 6" ASA vacuum nipple connected to the back.
The inside dimensions of the chamber are 14.5" ID and 6.5" deep. The chamber has a full opening door that is sealed by 2 O-rings. There is a differential vacuum pump out port between the O-rings. The door to the chamber has 2" ID window, with a manual shutter.
There are 6 ports around the circumference of the chamber, none of them are blanked off now.