What grades of filters do you offer? Boostopia August 22, 2019 21:05 Updated Follow Our filters are offered in three grades: Catch Some (MERV 8) Catch More (MERV 11) Catch All (MERV 13) CLICK HERE FOR MORE DETAILS Related articles How do your filters compare to my current filters? What is MERV? Is It the same as MPR and FPR? How do I contact Second Nature? Does Second Nature supply refills for electronic (powered) filters? How much do your filters cost? Comments 0 comments Article is closed for comments.