Which materials are commonly used for HEPA frames?

The materials commonly used for HEPA frames include particle board, plywood, extruded aluminum, and formed sheet metal due to their structural integrity, durability, and resistance to environmental factors. These materials provide a reliable support framework that can securely hold HEPA filter media, ensuring the filters maintain their effectiveness over time.

Particle board and plywood are frequently chosen for their cost-effectiveness and ease of manufacture, allowing for versatile design options while still providing adequate support. Extruded aluminum is valued for its lightweight yet strong properties, and it is resistant to corrosion, making it an excellent option for settings where filters may be exposed to moisture or other challenging conditions. Formed sheet metal also offers durability and provides a solid structure that can withstand mechanical stress, further enhancing the longevity of the filter.

The other material combinations listed in the other options may not provide the necessary support or durability expected of HEPA filter frames, thus making them less suitable in this specific application.