CPC B01D 46/521 (2013.01) [B01D 46/0001 (2013.01); B01D 46/103 (2013.01); B01D 2265/04 (2013.01); B01D 2275/203 (2013.01)] | 18 Claims |
1. An air filter apparatus, comprising:
an air filter material panel having a plurality of exterior edges; and
a plurality of flexible seals each along a respective one of the exterior edges of the air filter material panel;
wherein, by flexing the flexible seals, the air filter material panel is foldable along multiple non-parallel axes from an expanded configuration of the air filter apparatus ready for use in an HVAC system to a reduced configuration of the air filter apparatus that is volumetrically reduced relative to the expanded configuration, wherein the air filter material panel is foldable along multiple flexible inserts to reduce the physical dimensions of the air filter apparatus.
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