Lofted glass media is most commonly found in which style of filter?

Lofted glass media is most commonly associated with pocket or rigid filters due to its unique structural properties and advantages. Pocket filters utilize lofted glass media which consists of fine glass fibers that are arranged in a manner that allows for a larger surface area. This design significantly enhances the filter's ability to capture particulates while maintaining a lower resistance to airflow.

The lofted design aids in trapping a variety of contaminants, making these filters effective for both pre-filtration and final filtration in various HVAC and industrial applications. The pockets are spacious enough to hold a significant amount of dust and debris, which extends the filter's lifespan and efficiency.

In contrast, HEPA filters are typically composed of tightly packed, very fine glass or synthetic fibers designed for high efficiency, but not in the lofted manner used in pocket filters. Panel filters generally utilize less sophisticated media and are not designed with the lofted structure that characterizes pocket filters. Cartridge filters are often used for specialized applications and may employ various forms of media but do not specifically utilize lofted glass media in the same way as pocket filters do. Thus, the association of lofted glass media with pocket or rigid filters is accurate in this context.