Technical Data Sweep Watts rpm Air Delivery in m?min 56" (1400 mm) 70 250 310 48" (1200 mm) 65 310 270 42" (1000 mm) 62 350 215 36" (900 mm) 55 375 170 24" (600 mm) 60 850 400 INSTALLATION GUIDENCE Room size Fan Sweep Below 70 sq. ft. 900 mm/36" 71 to 110 sq. ft 1050 mm/42" 111 to 125 sq. ft. 1200 mm/48" 126 to 170 sq. ft. 1400 mm/56" 171 to 220 sq. ft. 1500 mm/60" For Larger rooms use two or more fans with distances of 2 to 3 sweep diameters between fans, as follows : Sweep 1500 mm/60" 1400 mm/56" 1200 mm/48" 1050 mm/42" 900 mm/36" Centredistance 3.3 mt. 3 mt. 2.5 mt. 2 mt. 1.8mt.