Other’s Metal Framed Panel Filter
This is an example of a what some air filter manufacturers call a metal framed filter.
A metal framed air filter should stop a filter from warping under high moisture conditions, or prevent catastrophic failure with an air filter flying down a duct to hit a fan or other critical component.
An Airclean Metal Framed Panel Filter has no cardboard, is fully sealed, and has a backing wire to ensure the media can never fall from the filter.
Airclean Metal Framed Panel Filter