recessed/membrane Polypropylene plate filter press (13) recessed plates, recess is 430mm x 430mm x 15mm deep, (12) non recessed membrane plates (these have attachment for air discharge) manual hydraulic press mechanism, manufactured by Magna pumps, 50-685 bar pressure, single screw, 50mm center feed, (4) 40mm corner discharge, plastic drip tray under plates, c/steel skeleton