Alsop Plate Press Filter. Model ST240, SN 0139-PF. Plate Dimensions: 24 in. W, 24 in. H. Has (6) ½ in. filters (4 are numbered), (5) 2 in. spacers, (3 are numbered) and (4) ½ in. spacers. Inlets: (1) 1-½ in. Outlets (1) 1-½ in. With valve for maintenance, 1-½ in. catchpan outlet. Catchpan dimensions: 30 in. W, 32-½ in. L, 2-¼ in. Lid. Legs: (4) 5 1/2 in. H. Overall dimensions: 32 in. W, 71-½ in. L, 45 in. H.