health,safety,competitive price,best quality,and provide you with the comfortable environment. SIZEModelVoltageHZWr/Minm3/mindB(A)Installation Size(mm)6"APB15-3-30220502513004.548205*2058"APB20-4-30220502812508.150255*25510"APB25-5-30220503812001252305*30512"APB30-6-30220504511001856355*355