常用高效送风口尺寸型号额定风量高效过滤器尺寸外形尺寸风管连接尺寸开孔尺寸GB02500M3/H320*320*220420*420*500200*200370*370500M3/H320*320*90420*420*400200*200370*370GB011000M3/H484*484*220584*584*500320*200540*5401000M3/H484*484*90584*584*400320*200540*540GB031500M3/H630*630*220730*730*500320*250680*6801500M3/H630*630*90730*730*400320*250680*6802GB012000M3/H968*484*2201068*584*500500*2001018*5402000M3/H968*484*901068*584*400500*2001018*540