400 ºC/2h centrifugal roof fans with ...
400 ºC/2h (F400) and 300 ºC/2h (F300) ...
400 ºC/2h and 300 ºC/2h roof mounted ...
400°C/2h and 300°C/2h rated dynamic ...
Dynamic smoke exhaust ventilators with ...
Centrifugal roof fans with horizontal ...
Centrifugal roof fans with vertical air ...