Rhombical
 
Aluminium and aluminium with epoxy coating.

The R Model is designed for high efficiency and occupies a minimum space in built in applications. The plates in Heatex´s model R are smooth, allowing dirt to pass through the channels without lodging and thus fouling the exchanger.

Heatex R is often used as cooling solution for electronics components and is a perfect product for applications where high efficiency and compact design are priorities.