Product review (5 stars): LG refrigerator filters
I haven't used them yet, but they look the same as the ones I bought in the store where I bought my LG refrigerator.  So, I'm sure that they will fit properly and do the job as air filters.  I change the air filter and water filter about every 12 months.  The guidebook suggests every 6 months, but our salesman said if it was just us two old folks we probably could go 12 months. And that seems about right.