While Merv 13 is overkill, there is some very common hazards that get filtered around Merv 8 and 11. The cheaper filter fibers have so many gaps they virtually do nothing.
While Merv 13 is overkill, there is some very common hazards that get filtered around Merv 8 and 11. The cheaper filter fibers have so many gaps they virtually do nothing.
RE: Merv Air Filters