The Jetstreme II dual 12-in (305-mm) fan from Maradyne is suitable for cooling high-performance engines and features the company's S-blade design and a rubber seal to eliminate vibration contact and increase airflow. Fitting 26 to 29 in (660 to 737 mm) radiator cores, the low-profile fan offers dust- and water-proof dual sealed motors. The standard Jetstreme II features a dual 130-W motor and delivers a maximum airflow of 2310 ft3/min (65 m3/min) at 14.4 A; 160- and 225-W motor versions also are available. Fans are balanced to provide smooth operation, less noise, and longer motor life. Constructed from all glass-filled nylon, fans feature concentric rings that prevent the blades from flexing as they achieve maximum rpm. Kits include an adjustable temperature switch.