This is a new program to further insure that your kitchen filters keep working well for you for many years. PHOTO NOT PERFECT> THE SUMP IS THE LOWER PURPLE CLEAR PART ONLY.
AT 5 YEARS, REPLACE YOUR UNDERCOUNTER (under-sink) KITCHEN FILTER SUMP OR SUMPS AT VERY LOW COST. ORDER ONE SUMP FOR EACH CANISTER YOU HAVE. Each sump includes a new canister O-ring.
Upgrade from your white sumps to these stronger ones.
Countertop filters don’t need this. Just get new O-rings every six years. (click link)
A few years ago a new undercounter housing was introduced that is far more sturdy than the industry standard. Previously, the under-sink housings were white. The newer improved housing is a purple-tinted clear.
The warranty on the housings is pro-rated 5 years. To avoid cracks or leaks, replace the sump at 5 years for Undercounter (under-sink) kitchen filters.
To swap in the improved sumps, just change filters cartridges as you always have. But instead of putting the older sump(s) back on, use the new one(s).