Zehnder Comfowell Attenuator Box CW-S 520 400 502 007 up to 93% of the
Baker’s notes & crumb story
Description
Zehnder Comfowell Attenuator Box CW S 520 400 502 007 up to 93% of the up to 93% of the heat is recovered by the heat exchanger before the air is expelled into the atmosphere – at the same time air is drawn in from outside and the recovered heat is then transferred and filtered before it is distributed back into the property 1x Igniter