The Paper Frame Panel Air Filter is contained within the air filter by a rigid all-cardboard casing, or a cardboard frame with recycled perforated cap-punch retaining grids. The filter is sealed together using hot melt adhesive glues to ensure a highly rigid and quality disposable panel air filter.

The Paper Frame Panel Air Filter is used in general ventilation systems, and has the characteristics of large filtering area, low resistance and long service life. It can be used as a pre-filter of a high-efficiency filter, thereby effectively extending the service life of the high-efficiency filter