One used Pfaudler Clamp Top Glass Lined Reactor, 20 Gallon, 9115 Blue Glass, Vertical. Approximately 20" diameter x 14-1/2" straight side, dished clamp top, dish bottom. Internal rated 150/Full Vacuum psi at -20 to 450 degrees F., carbon steel jacket rated 125 psi at -20 to 450 degrees F. (1) Fin baffle, 3 blade retreat curve agitator driven by a Pfaudler drive, no tag, set up for hydraulic drive, no power pack. Openings top (2) 1-1/2", (2) 2", 4" hand hole with sight glass cover. 2" Center bottom outlet. Mounted on 3 carbon steel legs, (1) broken. National Board# 51652, serial# J067238, built 2006