... Rated voltage Rated Frequency Power Air Output SRL13B 110V-240V 50HZ-60HZ 18W ≥320M3/H SRL11B 110-240V 50HZ-60HZ 18W ≥240M3 ... Panel Size Mounting Hole Size Air vent Noise SRL13B 210X210 150X150 150mm ≤35db SRL11B 180X180 120X120 120mm ≤34db SRL9B 150X150 100X100 100mm ... Net weight/kg Gross weight/kg Package/pcs SRL13B 48X45X45 14KG 16KG 16PCS SRL11B 54.5X39X58 20KG 22KG 30PCS SRL9B 54.5X32 ...