Uponor Comfort Panel is a thermally active ceiling panelling system for use in suspended ceilings in both new and refurbished buildings. The system can be used for either heating or cooling purposes. As with a conventional panelled ceiling, the thermally active panels are set into a visible (existing) metal frame substructure and are connected together at the back. Areas of ceiling not fitted with thermally active panels are finished with visually identical passive panels (blind panels). Depending on the ratio of active to passive ceiling panels, it is possible to achieve a very good level of sound absorption according to DIN EN ISO 354 up to "highly absorbent“ class.