Filter assembly and foldable filter bank

A filter assembly for a filter cabinet, the filter cabinet adapted to accommodate and hold the filter bank in a deployed state, the filter assembly comprising:

• a foldable filter bank comprising a plurality of filter-media packs, wherein adjacent filter-media packs among the plurality of filter-media packs are hingedly coupled to each other using at least one coupling element, wherein the filter bank has one or more of a deployed state, a folded state, and an extended state, wherein,
• the at least one coupling element is configured such that a pleat between adjacent filter-media packs on an upstream side of the filter bank remains more open on top of the filter bank compared to a pleat on a downstream side, and
• wherein the deployed state corresponds to a pleated formation of the filter bank, in which adjacent filter-media packs orient at a non-parallel angle to form a zig-zag arrangement of the plurality of filter-media packs.