"m Ransley" wrote in message
...
Stormin, your boss loves em because they make him money, did you ever
look at a coil of a spacepack that is 12" away from a april air media,
both space pack and April air being in direct horizontal airflow, no you
havn`t or you would have seen the top of the spacepack coil get dirty.
You cant see anything on a side furnace instal. This is not a new issue,
just a poor design that bypasses air over the top, next time move the
filter holder up and down in the case , you will see a positive air seal
does not exist as in the Air Bear design by Triton. April air has great
humidifiers, but poor case design on the 2200

Well, if you get a thicker (3" up) pleated filter you can combine high
efficiecy (gets the small stuff almost like a HEPA filter) along with a low
pressure drop. When you have a low pressure drop a little "air leakage"
that bypasses the filter just doesn't make much difference.