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Gerdhard-TroglauerOne order. One price!

Whether for facade or roof, parallel or elevated - we provide you with the mounting system wich fits your needs best, even without additional costs! 

Our Twinsolar Compact packages include everything wich you need for a solar ventilation: solar air collector, roof or wall penetration, non-return valve, thermostat, air outlet and if required an insulated flexible tube.


Gerd Troglauer
Order processing

German Quality...subsidised by the state

Our SolarAir collectors are being developt already for 30 years in our own factory in Amberg under the highest demands on quality. They are very robust and can be used during decades.


SolarAir collectors by Grammer Solar are subsidised in Germany.


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