Calmark is the home of the Card-Lok.


Calmark designs and manufactures rugged printed circuit board guides, conduction frame assemblies and extractors for use in non-benign - airborne, shipborne, and rugged land transportation - environments.


Today, Pentair markets the Calmark brand of products along with Birtcher and Schroff. Pentair is a manufacturer of standard, modified standard and customer specific enclosure systems.


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