Send us the obsolete one
When an OEM discontinues an element, the machine does not stop needing it. We reverse-engineer from a sample.
When a machine builder discontinues a filter element, the machines it went into carry on running. That is most of our built-to-print work.
We need a sample, a drawing, or a photograph with a set of calipers in frame. From any of those we can build to the original specification. Runs start at 25 pieces and first articles come with a test report.