Zimmerman was established in 1963 to build the first modern Tower Dryers. FFI purchased Zimmerman in 1989 and FFI/Zimmerman became a part of the GSI Group, LLC in 2001. All FFI Tower Dryers have their roots in the Zimmerman Tower Design and have been and will continue to be the market leader in grain drying technology.
FFI’s F-Series Tower Dryer design natively allows for easy heat recovery without the uneven heat issues of other designs, as well as a patented self cleaning divider floor and quiet operation with fans located inside the grain column GSI stands behind our FFI products and have the Dealers and Service Techs to ensure your dryer works when you need it. Harvest is a short window of time and you depend on your dryer working, so we know just how important it is.