Are you looking for the ultimate panel filter? Pipercross have the answer with their flagship 'Pipercross Plus' range.
Not just a gimmick, this product has improved strength and rigidity, swapping out the mesh used in the regular Pipercross panel filters and replacing it with a stronger and better looking 1mm steel frame. You can really feel the difference that this change makes to the strength of the filter, even when pulling 100s of CFM (cubic feet per minute) through the foam.
A new stronger frame has been created with breathability in mind, when compared to our regular mesh, this frame has a 22.1% increase in effective flow area. Not only is this good in terms of performance, but the increased rigidity in the frame will also affect durability.