Model 25-6-220-C, cylindrical design. Filtration area of 176 sq. Ft. Serial number 71-H-1670. Carbon steel construction. With 8" channel frame for legs ( not with unit). 42" diameter x 12'-6" top of collector to bottom of hopper. 8" round flanged outlet. (to be installed)" dirty air inlet; 6" clean air outlet. Currently has scrap exhaust fan (buffalo size 5, type e, 5 hp) installed with mounting stand on clean air pelnum. Currently has no bags or cages. Unit has four 24" diameter stainless steel explosion vents (need replaced). Side removal design of bags. Needs total rebuilding and painting. Fan not included.