Hull Freeze Dryer, Model 48SF75, Heresite Coated Chamber, stainless steel shelves and door, 48 sq. ft.shelve area with (8) 24" x 36" shelves, 4.5" shelf spacing, 75 liter ice capacity, TCE shelf fluid, 5 oz. freon, stoppering, with power unit and controls, New 1975 updated in 1991.