How does the filter fit in a Holmes model HM7808 (bought used)?

Page 2 of the manual has it is words.

https://manualzz.com/doc/52322507/holmes-hm7808-cool-mist-humidifier-owner-manual

https://www.google.com/search?q=change+filter+on+Holmes+HM7808

..

https://www.amazon.com/HWF-25-Humidifier-Filter-HWF25-HF220/dp/B00RYVXJ5G


"HWF-25 Humidifier Filter HWF25 / HF220 / HM725"
Amazon com HWF 25 Humidifier Filter HWF25 HF220 HM725 Home Improvement

Tanks are no longer available. Search for used units on your local craigslist.com. This model was previously made by Holmes and tanks were the same on HM3500, HM3501. Search "Holmes humidifier" then search "sunbeam humidifier" on your local craigslist.org

most bigger towns will have one or two show up. Keep an eye out. People who move to a house (or install) a whole house humidifier sell their old units. We have two of the exact model and I bought a new in box 3501 from a Craigslist posting in September 2013!

remember to change your filters
http://www.westsidewholesale.com/air-quality/air-filters/air-purifier-filters/holmes/holmes-hapf600dpdqu.html

You may purchase new filters directly from Holmes Products website

http://www.holmesproducts.com/Filters.aspx?cid=1610&page=-1&gclid=CKys-rPLpqcCFQ975Qod82UqAA

Hi, You can get the manual on the link below.

http://www.holmesproducts.com/Manuals/MANUALS/HM5082-U_43_23787846.PDF

Good Luck

This page has 18 pdf user manuals they are only 1-2 pages each open them in adobe reader till you find the one you need wish i could be more help
http://www.holmesproducts.com/Manuals.aspx

I found that Home Depot had 9 left in the store and that they will not carry them any more so
we bought the last 9 and hope they will last for a while and then may have to contact you again
to find out where else to look.
Thank You
Dave Adamson

possibly calcium or other deposits from the type of water you are using in the unit..........

I have the evenflo cool mist humidifier, model # 758100. There should be a model number on the unit. As far as replacement filters, you can buy the Holmes humidifier filter, model # HWF62. It's compatible with Evenflo. I bought a 2-pk at Target for $15.99. Hope this helps.