The best filter at a good price
922073
Multiple cats don't have an issue sharing water from a Drinkwell (unlike sharing other things). These charcoal cartridges make the water seem fresh to them for a long time. Yes, you need to put one in a bowl of water and let the loose carbon float off before using. That's not very hard. I do that while taking apart the Drinkwell pieces and cleaning off cat hair and whatever else off the unit before reassembling with the new filter. I gave this five stars, but I have never drunk from it, so can't vouch for how good the water tastes. But it's the preferred drinking spot for out felines, and have many years experience using countless filters. The authentic Drinkwell filters are best, and Amazon sells them at a good price.
438813
This unit is very quiet and efficient with the large easy-replace filter.
Good price for this quality filter it even has the ultra-violet elements.<a data-hook="product-link-linked" class="a-link-normal" href="/Luma-Comfort-AP170W-PureClean-HEPA-Air-Purifier-with-5-Stage-Advanced-Air-Cleaning/dp/B00APPYX5I/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">Luma Comfort AP170W PureClean HEPA Air Purifier with 5-Stage Advanced Air Cleaning</a>
27155
As far as I'm concerned this is definitely among the best filters on the market.  It does the job- you can see the results after a couple months.  Will buy again.
3278047
I choose this filter because it was the one that fits and it was a good price. Also, I liked how fast it shipped at a good price or for nothing. I can't remember which.
666026
These filters are just wonderful.  We have one intake in our central air conditioning system, and this filter certainly does the job.  You can barely hear the air as it passes through the filter, and it certainly collects a tremendous amount of visible and invisible particles.  We change the filter about once a month, or as indicated by the amount of dirt shown.  Great product at a very sensible price.
1639723
This unit is $120 locally. I have used many filters over the years, and this is simply the best tasting, best at removal of the bad stuff for the money. Highly recommended
4360459
Amazon offers these filter cartridges at an amazing price - the best all around and I try my best to comparison shop. I have three tanks that use these filters, so I buy these in bulk.
3259937
these furnance filters i've been using for a few years, and they are priced right from amazon.com. These Filters are the best for my furnance and my wallet
450675
These are really good filters at a fraction of the cost. I can't understand why anyone would buy filters from local stores at the price they're asking. Even the 'large' discount stores want to charge a fortune for filters. These filters are very effective and cost only a fraction of what you pay at local stores.
4607731
This is my third filter that I have purchased through Amazon Prime.  The filter is a true genuine factory filter and everyone of them has worked perfectly.  They ship quickly and are easy to install.  The price is the best that I have found on other internet sites and stores.  In fact, my local heating/cooling guy was selling these for over $120.00!
788977
Brand name replacement filter at a good price.
4229277
This is a real powerhouse of a filter. It is such a good deal. I did replace the plastic tank fittings with PVC, they were really cheap plastic. Other than that, I really recommend this filter. I have 3 aquatic turtles that are very messy, this tank cleans 75 gallons without a problem.
3437079
This is the filter my a/c company uses when they service my unit, but I've found it to be a lot cheaper if I buy it myself and Amazon has the best price anywhere.  I usually buy two at a time so that I'm never without.  It filters dust from my system the best I've ever seen, and we've been through several types and brands.
1303297
Good filters for a good price as far as i can tell, cannot find this size in stock in my town
1376241
This is a good UV Filter at a good price.  I recommend this filter for anyone looking for a good lens protective filter.  Amazon provided a great protective package and quick delivery as well as the excellent pricing.
1155464
GREAT filters, they work so well I have to use them more often, they catch so much that nothing gets thur, I like that. I have lung disease and my daughter has asthma and these are doing great, I will have to order more soon, I think I will stick with these from now on. The proformace is perfect, and the price, is right on for me,  You can not go to Walmart and get six filters of this quality for the price of these.
1745972
Very good filter and fits perfectly. Will buy again.