Product review (4 stars): it works
I purchased this to replace the more-expensive LG LT500P in my LG refrigerator.

It didn't install quite as quickly and easily as the LT500P does.  Took a little bit of fiddling to find the right alignment to get it to screw in.  But it does fit correctly.

Seems like there was an awful lot of particulate initially...  Had to run a good amount of water through before it started running clear.  Seems like it took more water to flush it than with the LT500P.

But, ultimately, it works.  It's delivering tasty, clear water - just like the LT500P did.  Now that it's installed and running, I can't taste any difference between the two of them.