Product review (3 stars): If you have good quality water in the first place, this is a good less expensive option.
As far as fitting & ease of installation this is identical to the original filter that came with our fridge. We're fortunate enough to have really good city water where we live, which is why I even considered using this. The other reviewers go into more detailed information but basically this is only rated for taste, it's not going to remove anything harmful from your water. If I had any concerns over our water quality (I drink from the tap frequently) I'd definitely go with the actual LG model which is rated for more removal (side note, it's also a great price here on Amazon, about double this filter at the time of review but that price is far under the MSRP or price you'd pay at your local home improvement store). I'm also not sure where the original filter was made, but this one has "made in china" stamped on the box... if I find out the original is made somewhere besides China I think that would be another reason to skip this option.

Our water tastes, smells, looks fine... so no real complaints.