Here too, the name says it all: the PLUS is attached in addition and supplies that extra for the air passage values. Last of all, KBE 70 CL also gives you the REGEL-air® PLUS. Otherwise, the values and properties are the same as the rebate fan’s. This may be necessary above all in slender windows. Owing to this spring, the fan can be installed not only horizontally, but also vertically. The fan features two-stage wind pressure regulation and so promotes an excellent living climate.Īnother fan is the REGEL-air® RF with a return spring that makes this so special. For instance, there is the old established REGEL-air® FL rebate fan that can be installed only in the horizontal section of the window. KBE introduces no fewer than three different REGEL-air® fans depending on the installation conditions and the air needs. Here the ventilation system REGEL-air® provides for fresh air – also without active ventilation. There are a large number of cases where the conventional ventilation methods are inadequate, e.g.
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