this AT33 series post inline filters asre usually used as the last stage of the ro system,they are made of the all kinds of filter medias ,like ,carobn ,KDF,resin ,slic sand ,ceramic ball ,,,,
which have dine effect of filtratin for removing the chlorine ,taste ,and odor
filtration precision:1-20micron
length:5 ihcn 10inch
out diameter:2.5 icn 4.5inch/55mm.60mm.63mm.
inner diameter1.1inch/28mm