Product review (4 stars): The Supco water flow is quite a bit more than what I remember for the Brita brand.
Since I could not find my old Brita brand filters I went with the Supco brand.  They are shaped slightly different and had an extra clear soft (silicone?) washer in addition to the O-ring but seemed to fit OK.  Look for this washer as mine fell out when I opened the seal on the flange.  The filter body is not marked with a matching alignment arrow like the GE and Brita filters so look at the filter you are removing and note the orientation of the locking flange so you can insert the Supco filter the same way.  My first attempt did not seat well and a squirt of water came out.  I tried again pushing up harder while twisting and it seemed to seat OK. It's been a week now and so far no leaks.

The Supco water flow is quite a bit more than what I remember for the Brita brand when they were new.  This on one hand is a good thing as we are on a private well and our pressure is probably not as high as most people on city water.  When the Brita filters were a few months old the flow dropped off quite a bit and it took a while to fill a glass.  This makes me think that maybe the Supco brand don't filter as fine as the Brita and GE brand but I have no proof  of that.  Time will tell how these work.  They are less expensive than the Brita which is OK only as long as they filter as well.

The 3 filters were delivered quickly from National Trade Supply, LLC and their email communications were prompt and thorough, acknowledging my order and its progress through their system.

My four star review is not five only because I am not yet sure of the filtration quality of this brand and will have to wait and see.