Abstract: A flexible industrial air filter system including a plurality of workstations, air filter units and a plurality of duct sections interconnected together to define a modular duct work grid. T-connectors are mounted between some of the sections with the workstations and air filter units positioned generally adjacent the T-connectors. Connection ducts interconnect the T-connectors and either the workstations or air filter units. Quick release connectors connect the connection ducts to the T-connectors and to the work stations and the air filter units such that the workstations and air filter units can be quickly added, removed, moved, and repositioned as desired.

Abstract: A filter media cartridge and method of making filter media wherein the filter media has a plurality of folds formed into a tube with an internal support core supporting the media material. A plurality of retention bands mounted about the filter media to retain the filter media in position and prevent media from expanding outwardly sufficiently to damage the filter media. At least a one glue bead located circumferentially about the filter media. The glue bead adhering adjacent folds of the media together to provide support and regular spacing of the folds so that the folds are prevented from collapsing with respect to one another.

Abstract: An air filtering system and method for self-cleaning the same is provided. The system has a plurality of air filters including a first filter and at least one neighboring filter. A blower fan pulls air through the filters. A plurality of compressed air injectors are provided adjacent the filters including a first injector and at least one neighboring injector. Self-cleaning is achieved while the blower fan is running by preforming several steps including activating the first injector to force compressed air into the first filter and discharge particulate from the first filter followed by deactivating the first injector. The steps further provide reactivating the first injector and simultaneously activating the neighboring injector while the discharged particulate is airborne to provide an air shield about the first filter and force the discharged particulate away from the first filter and the neighboring filter. These steps are repeated for each filter.