| http://www.w3.org/ns/prov#value | - Besides the pleated filter shown, other filter modes may be used with the device and method of the invention, including but not limited to bag filters, vortex, centrifugal filters, and other filtration mechanisms.The illustration in FIG. 4 is a view of the front face of the first compressible foam block 24 and a view of the front side of the second compressible foam block 26.
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