Canjin kwandon ruwa na Pool Pool Water Filter don Hayward C500, CX500-RE, PA50, Unicel C-7656, Filbur FC-1240, FC-0625, FC-0620

Idan kun riga kun san lambar ɓangaren harsashin tacewa ko lambar musanyawa, zaku iya amfani da binciken lambar ɓangaren akan shafin samfurin mu don tabbatar da sauri ko tace ɗin ya dace.
Idan ba ku san lambar ɓangaren da za ta maye gurbin harsashin ku ba, to zabar harsashin da ya dace za a iya cika ta ta hanyar auna wanda kuke da shi. Yi amfani da matakai masu zuwa azaman jagora:
Auna diamita na waje na harsashi a inci (+/- 1/16).
Auna tsawon harsashi daga hular ƙarshe zuwa madafun iko (+/- 1/16). Kere kowane hannu ko kari.
Gano nau'in sama da ƙasa daidai. Idan sama da/ko ƙasa a buɗe suke, auna diamita na ciki na buɗewa (+/- 1/16 inch). Idan ƙarshen hular yana rufe yi bayanin abubuwan da aka gano ta (watau "Handle", "Mazugi", da sauransu).
Yi bayanin mai ƙira da lambar ƙirar tacewa wanda za'a shigar da harsashin maye gurbin a ciki. Kula da ko akwai cibiyar tsakiya (PVC bututu a tsakiya ko a'a).