UNUSED 100 sq ft Carbone of America cubic block model 100-100-38L graphilor block heat exchanger. Heat transfer area is 100 sq ft on process and service sides, with 3/8" diameter holes with single pass on process side and 12 pass on service side. 6" process nozzles, 2" service nozzles, 100 PSIG @ 360 degrees F design pressure. Teflon service and process gaskets. Overall dimmension 24" wide x 24" deep x 48" tall. Built 2003.