karcher vc3 Strainer Frame filter replacement

适用于karcher VC3 型号的后级过滤，自己从淘宝买圆形的HEPA滤网放进去。里面的滤网用的是11cm直径的（我买的是这家圆形新风管道PVC110/160250空气净化器HEPA过滤网滤芯除雾霾pm2.5-淘宝网）For karcher VC3 model post stage filtration, buy round HEPA filter from taobao and put it in by yourself. Inside the filter with 11cm diameter (I bought this round fresh air duct PVC110/160250 air purifier HEPA filter cartridge to remove haze pm2.5-Taobao)