Details Model no. Ss(r)-26cw ss(r)-35cw ss(r)-50cw ss(r)-72cw Power supply 220-240vac, 1ph, 50/60hz Cooling capacity btu/h 9000 12000 18000 24000 W 2600 3500 5000 7200 Heating capacity btu/h 10000 13000 20000 27000 W 2900 3800 5500 7900 Noise db(a) 48 52 56 58 Air circulation m©/h 450 500 650 750 Suitable area m©÷ 10-17 15-23 20-25 30-48 Eer w/w 3.48 3.52 3.33 3.55 Btu/h/w 11.87 12.01 11.36 12.11 Power input w 600-750 850-1000 1400-1600 1800-2100 Rated current a 2.72-3.41 3.86-4.54 6.36-7.27 8.18-9.54 Dimentions l*w*h (mm) Window panel net 530*480*330 645*560*400 750*680*420 750*680*420 Shipping 605*540*455 710*625*520 815*745*530 815*745*530 Flat plate collector net 1000*500*85 1000*500*85 1000*500*85 1000*500*85 Shipping 1120*600*130 1120*600*130 1120*600*130 1120*600*130 Weight n.W./g.W. Window panel kg 31/33 48/50 68/72 72/77 Flat plate collector kg 14/18 14/18 14/18 14/18 . Carton.