Our top of the line 16" reversible Tornado fan uses 8 skewed blades, producing a healthy 2175 CFM at 0 static pressure, drawing only 18.4 amps. Kit includes a high quality single stage fan controller with preset 180°F-on and 165°F-off temperature controls and includes both a push-in radiator probe and a 3/8" NPT brass water jacket probe, plus all necessary installation hardware. Made in the USA.