Microline Filters S7125 and S7128 are Different Size - Proprietary
And the 50 gpd membrane, S1448RS, is the proprietary ( Short ) version.
* We stock and sell the common Microline 11 1/2" length replacement filter cartridges.
To adapt from having to use the shorter proprietary version, and start using the longer "standard" version,
you must replace the sump housings ( change all 3 if changing the Membrane too ) with longer version of the housing ( our PN S7029-09 ).
* As of October 2025 we can no longer provide the replacement sump houses ( that fit the standard Microline Filters ).
Here is a link to a company that has "compatible" replacement filter,
see:
https://www.waterfiltersonline.com/replacement-water-filters/extrapure-ro-450-reverse-osmosis.html
Here is the Short Fatter Filter ( S7125 ) compared to the Longer Microline S7025 we sell:
Microline Filters For Sale Here"
** Other proprietary versions use part numbers S7228, S7225, S1340RS ( such as models sold by Intermountain Soft Water ).
And the standard filters ( S7025, S7028 ) and membranes ( S1229RS ) will not fit / work with the proprietary models, unless you change the Sump Housings ( all 3 ) to S7029-09.
Another example is "Water Care Clear Flo", with CS7111 ( replaced by S7011 if all SUMP Housing replaced ), CS7125 ( S7025 ), CS7206C-JG ( S7206W-JG ) and 100 GPD membrane CS1774RS ( we recommend the 50 GPD, S1764RS )
