Filtermist Coolant Units Filtermist Coolant Units Series 8 Models F34, F28, F21, F14, F1200, F900 F600, F1200/28, F900/21 and F600/14. Operator's Instruction and Maintenance Manual. Manufacturers: Filtermist Models: Series 8 F34 F28 F21 F14 F1200 F900 F600 F1200/28 F900/21 Contents: Operators Manual Maintenance Manual