One used 2.8 sq meter Dedietrich glass lined nutsche filter, 23 5/8" nominal diameter, rated 100 psi and full vacuum at 500 f internal, jacketed for 90 psi at 500 f on sections 1 and 2, removable top with davit arm, removable bottom, 2.8 sq meter surface area, 29 gallon straight section, 3008 glass, serial# 33623, national board# 4287, new 1987.