Hi, New in the blog. I am from Mexico. I work for Gonher that is one of the greatest Filter MAnufacturer here in the country. I must say your used filter can hold way more dirty before the differential pressure becomes and issue. That kind of nonwoven media material is good for Efficiency and Capacity.
If there is something I can address please do not hesitate and write so I can share a little knowledge while working in the Engineering area.
NOTE. Which category are consider for Proselect filters from 1 to 4? 1 the cheapest and 4 the pricer.
Greetings,