Water Filter for the Profile PST26NGPBBB (MWF)

PST26NGPBBB specifics — where the filter actually lives

Finding the bay is the easy part — this chassis puts it in the fresh-food compartment — exact spot varies by dispenser layout, a deliberate placement that keeps the swap away from the door seals and drawer rails. This is a twist-style bay, the friendlier design: a quarter turn one way to release, the other to seat, and the only tool you need is a towel for the drip.

The small print owners learn the hard way: a first removal that fights a set o-ring, and a status light that needs a manual hold-to-reset before it acknowledges the new cartridge. Whatever the badge on the door says, the parts reality is the MWF line — which is why fit listings key on chassis rather than door style. Trailing letters like BB denote trim and finish: stainless, panel-ready, handle variants. The water path is identical across them.

Reading the PST26NGPBBB model code — what the digits tell you

Capacity check: the 26 cubic feet in the code is the box size, and bigger boxes push more water through the same cartridge between swaps. Cross-checking by chassis pays off here: whatever the door count, the cartridge answer for this chassis is the MWF family.

Swap it in 5 minutes

• Twist the old cartridge a quarter turn counterclockwise and pull it straight down — keep a towel in reach for the dribble.
• Fill the new cartridge with cold tap water so the chamber is not fighting an air pocket.
• Offer the new cartridge to the bay, push up, and twist a quarter turn clockwise until the stop catches.
• Run two gallons through the dispenser to flush carbon fines, then hold the filter-reset control until the status light clears.

What this filter takes out of your water

Coverage above lists what the standard addresses, not a performance claim for any specific cartridge — removal claims vary by certificate, so check the NSF listing for the exact part number you are buying.

PST26NGPBBB filter questions