Product review (1 stars): it didn't release the pressure like it should - was very hard to get inserted
Installed 1st one...when I took the cap off it let off some pressure (never had that happen before). When I installed it, it didn't release the pressure like it should - was very hard to get inserted.  Tried to reinsert it - all the pressure shot out when I tried this.
Had to throw it away and try the 2nd one.  I got it to work - but only after applying much more pressure than normal to get it to seat and release.

I've replaced my filters regularly over the last 6 years - this is the first time I bought anything other than the blue PUR filters.  I will not buy these again - will stick with the brand name - you get what you pay for!