The multi-stream outlet discharges two adjacent air streams; unheated and warm air curtain. The ambient air stream dynamically adapts to the air volume of the heated air acting as a barrier between the outside and heated air giving deeper penetration and effective air curtain even at high mounting heights. Using unheated air in parallel with the warm stream is said to result in substantial energy saving over conventional systems.

Featuring design versatility, the ProtecTor offers standard horizontal above door installation or standing version mounted vertically at one or both sides of the opening, a range of heat exchanger standard copper/aluminium or cross-counterflow galvanised steel suitable for low water temperature heating systems and corrosive environments, standard lengths up to 5m. These also come equipped with ErP-compliant 3 phase AC or single phase EC fans, allowing an extensive range of control accessories including speed controllers, industrial thermostats, door contact switch, and integration with building management systems.