Product review (1 stars): AVOID: Even after shipping a replacement, the brand new filter is SO SLOW the whole family avoids drinking filtered water.
Even after Amazon sent a replacement for the first (defective) filter, this second is similarly so slow (compared to other filters I've used) that my whole family avoids drinking filtered water now.  Seriously.  It's advertised as "0.5 GPM" (that is, one half gallon per minute), but it takes longer than one minute to fill a single quart jar.  It takes so long that the fridge's internal timer mechanism shuts off the flow before we even get a single quart of water out.  Over repeated measurements and (simple) calculations, this is flowing WELL BELOW 0.25 GPM, and we hate it.

Facts: This filter is brand new, fresh from Amazon. It is a replacement for an identical, new filter from Amazon, which suffered the same horrendous flow. The water pressure to our fridge is normal/adequate-- it has not changed.  Other (non-OEM) filters flow at 0.5GPM, with no other change in setup.

[If anyone wants, I'm happy to upload any number of (real time) videos of this thing dribbling water into a quart jar.]