99.97% filter efficiency Contains 1 filter and 1 spacer Fits 10500, 10590, 17000, 50100, 20500, 20590, 20500 Honeywell units Product DescriptionNew Permanent Life Time True HEPA Filter is vacuum-able… More >> Honeywell HFR-11 Pure HEPA Permanent Replacement Filter [Read More]
Watts 5YR Premier Filter Lasts up to 5-Years or 20,000 Gallons. Reduces Chlorine Taste & Odor and is Bacteriostatic Read the post
Check out the link below. This is what I have and love it. I pulled the filter part out, ran water with food coloring Read the post
That's not a water filter...it's only a water softener...big difference. Read the post
You can try here for more help with that. http://www.purwaterfilter.com/faqs.html Read the post
I would not take any chances and discard the filter. It is almost shot anyway. It is not worth risking the device for Read the post