Instapure R2, R2CB, R-2C, R-2CE are all part numbers for these that suit the Waterpik tap filter Models F-2, F2R-2ES & F-6, F-6E, F7 and F2BCT3P-1ES models
The R2 filters have a 760 litre capacity or 3 months.
Reduces Dirt, Sediment, Rust, Chlorine, Chemicals, Trihalomethanes, Bad Taste & Odours.
Dimensions are 77mm long x 55mm across.
These filters have an endless shelf life if unused, so buy in bulk and save.
The filters are sold individually but the more filters you buy the more you will save.