Plate and frame design. Model epf630/32. S/N aod01432. Net filter volume: 9.6 cu/ft, net filter area: 187 sq/ft. Max. Design pressure: 100psi. Steam heated. Air over oil hydraulic closer. 31 cast aluminum plates with 31 chambers (1.25" cake thickness). Overall dimensions: 50" W x 146" L x 67" H. Current manufacturer is SAMCO Technologies, Inc. Item is unused. Manual and drawing on file.