www.grainger.com/.../kh-what-is-merv-rating-air-filter-rating-chart
Quote:
|
I managed to find a MERV 13 air filter
|
The pores are smaller. Doubling up halves the pressure required.
I've got a 1/3 HP fan blowing directly into a MERV 11 14" square filter. It bows out in the center as it clogs up.
The first filter, from March lasted 6 months, the second one lasted 3 days.
__________________
.
.Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster
________________
.
.Because much of what is in the published literature is nonsense,
and much of what isn’t nonsense is not in the scientific literature.
-- Sabine Hossenfelder
|