Product review (5 stars): Original OEM LG Water Filter for LG Refrigerators with Built-In Ice Machines/Water Dispensers
This is the original, OEM filter for certain LG refrigerators, which have a built-in filter housing.  Our model's housing is built into the inside "ceiling" of the fridge.  These are specialized, so that only LG filters will work--they're inserted into the housing, then you simply twist 1/4 turn & you're good to go.  This will filter water for the built-in water dispenser and ice machine.  It's important, after installing, to "prime" the filter & water lines by running water through your water dispenser for a good 5 minutes (this will purge all air from the lines).  Otherwise, you could invite a leak.

This is a solid performer.  I've replaced ours about 3 times since we've owned it & it's easy to do.  It definitely improves the water quality & flavor & I've noticed that every discarded filter actually weighs quite a bit more than the new ones.  This tells me that they effectively trap particulates & minerals from the water.  A great value, thanks to Amazon--cheaper than my local big box home improvement retailer & delivered right to the doorstep.  Highly recommended!

P.S.  Check your filter model number to be sure this is the right fit for your fridge--info should be printed on a label on the inside frame of the door.

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Have a question about this filter?  Just leave a comment & I'll be happy to help you, if I can.