Product review (4 stars): Does the job
<a data-hook="product-link-linked" class="a-link-normal" href="/LG-LT700P-Refrigerator-Water-Filter/dp/B0042ACZU2/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">LG LT700P Refrigerator Water Filter</a>
I have an LG French door refrigerator with a slim space door-mounted ice/water dispenser.  The water dispenser requires that a filter be installed every 6 months.  I use the water dispenser whenever I previously would have used bottled water.  It's hard to find these filters at retail locations; Amazon has em.  They are reasonably priced can be bought in multipacks, and delivery is quick.