Patent ID: 8409337

Claim:
A deep bed scrubber filter section, comprising: an unfiltered air input end; a filtered air output end; an airflow filtration path extending from said unfiltered air input end to said filtered air output end; a plurality of media beds along said airflow filtration path in series arrangement with one another; said media beds each having a media bed volume and each being defined by a plurality of sidewalls, two of said sidewalls of each of said media beds being perforated sidewalls at least partially intersecting said airflow filtration path; wherein a positionally adjustable sidewall of at least one of said perforated sidewalls of a first media bed of said media beds is independently removable from said airflow filtration path and is independently adjustable to a plurality of positions along said airflow filtration path; wherein adjustment of said positionally adjustable sidewall of said first media bed alters said media bed volume of said first media bed.