Product review (2 stars): Forget these.
I used to purchase these when they were&nbsp;<a data-hook="product-link-linked" class="a-link-normal" href="/Whirlpool-W10295370-FILTER1-Refrigerator-Water-Filter/dp/B0049IA8QK/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">Whirlpool W10295370 FILTER1 Refrigerator Water Filter</a>&nbsp;... and they worked okay.  They were nothing special, and the price is shocking for a what you get.  I don't have the initiative or tools to take a bandsaw to one of these filters, but I bet there isn't any magic going on inside this cartridge, other than the neat trick of getting you to pay 20x what it costs to make the thing every 6 months.

After two years of paying for these things, I decided to research alternatives.  I installed one of these at the top of the fridge:
<a data-hook="product-link-linked" class="a-link-normal" href="/Watts-5YR-Premier-Filter-5-Year-20-000-Gallon-Inline-Ice-Maker-Water-Filter/dp/B000E77I0Y/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">Watts 5YR Premier Filter 5-Year/20,000-Gallon Inline Ice Maker Water Filter</a>
The economics are pretty self-evident.  Even if you find yourself unable to install this filter, a handy friend or neighbor might be able to help you out for the price of a 12-pack of their favorite adult beverage.  Go that route and save yourself enough money for fun things here on Amazon.  Plus the water taste and quality seems comparable to me, perhaps even better.

I put a label in the fridge with the date of when I installed this 5-year filter so I know when to replace it -- and I just reset the stupid alert on the refrigerator door whenever it comes on.