[ph33nyx]

Just wondering if anyone has ever just replaced the filter material itself instead of the whole unit, and if so, what did you use?
TIA

 

[fernando]

dont think its needed as long as you keep it clean, now if its damaged, I'd just use flat foam for filters although it maybe more expensive that actually buying the part.

http://www.petmountain.com/photos/product/giant/114420S522404/-/flat-box-filter-foam.jpg