Abstract: Described herein are various embodiments of an apparatus, system and method for manufacturing irregularly shaped panel filters. For example, according to one illustrative embodiment, a system for manufacturing irregularly shaped panel filters includes a filter medium source, a scoring section in filter medium receiving communication with the filter medium source, a first gathering section in filter medium receiving communication with the scoring section, an unfolding section in filter medium receiving communication with the first gathering section, a shaping section having a laterally moveable cutting portion in filter medium receiving communication with the unfolding section, and a second gathering section in filter medium receiving communication with the shaping section.

Abstract: A filter element for mounting in a filter housing has a support frame for supporting filter media and a seal integrally formed with the support frame for sealing against the filter housing.

Abstract: An acoustic silencer is provided by a tubular member extending along an axis and having a hollow interior defining an axial flow path therethrough. The tubular member has a sidewall with an interior face facing the hollow interior and having quarter wave resonators formed by blind holes therein.

Abstract: An air filtration cartridge has annular filter media having a hollow interior and extending axially between first and second distally opposite end caps. The first end cap is an outlet end cap having flow straightening structure integrally formed therewith and spanning the hollow interior. The second end cap is a closed end cap having an interior face having quarter wave resonators formed by blind holes therein.

Abstract: A filter element for mounting in a filter housing has a support frame for supporting filter media and a seal integrally formed with the support frame for sealing against the filter housing.