I have not used them yet . This will be the first time using them.I still have the standard ones. The only thing I look at is the color of the filter when I take it out.
The worst pleaded filter I have ever seen in my life look like a drunk could put these plates together some stuck together someone way apart. Just a complete mess.
The worst looking pleaded filter I have ever seen in my life. Some of the plates were stuck together others were so far apart what a mess. I will never buy pleaded filters from this company.
it is great to order several months at a time so I have them when it is time to change them. air is always more clean when filters are changed regularly.