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* * Max. opening width (m) 1.6 Max. opening height (m) 2.5 Air flow rate (m/s) 8.5/7.0 Air consumption (m/h) 3221/2840 Motor power (W) 150 ..

How to keep warm indoors? In public places, shops, cafes, etc. often there is a problem - large heat losses. This is due to the fact that the front door often opens and it is at this moment that warm air comes out and cold air enters. Neoc..