Filter cartridge with centerboard, dust collectors, and methods

摘要

An air filter cartridge is provided including an air filter media construction having a first, outlet end, flow face and an opposite, second, inlet end, flow face. The filter media construction has fluted media secured to a facing media sheet. The filter media is closed to flow of unfiltered air completely therethrough. A centerboard is provided. The centerboard has a media portion embedded within the media construction. The centerboard has first and second opposite sides. The media portion that is embedded within the media defines an aperture arrangement extending completely through the centerboard from the first side to the second side. An adhering sealant secures the centerboard to the media construction. At least some adhering sealant extends through the aperture arrangement.

主权项

1. A centerboard for use with filter media in constructing an air filter cartridge, the centerboard comprising:
(a) a board construction having opposite first and second sides; (b) the board construction having a plurality of apertures extending completely through the board construction from the first side to the second side; and (c) at least some of the apertures in the plurality of apertures are non-circular.