HEPA filters require different frame and housing systems because they are typically heavier than typical general HVAC filters, and they are in a systems that provides air to a more critical environment. It is important to match the right frame or housing to the type of HEPA filter you will use, and the application (i.e. Hospital, Food and Beverage Manufacturing, etc) of the space that needs HEPA filtered air.
This eBook will help you navigate those choices to ensure the proper selection for your application.