EFFORTLESS PROTECTION FOR YOUR GEROLD CLARINET
Boveda patented 2-way humidity control makes it easy for you to protect your Gerold clarinet with precision. Wood instruments should be kept between 40% and 60% relative humidity. Boveda eliminates major fluctuations in relative humidity inside the instrument case.

https://www.gerold-klarinetten.at/en/configurator-shop.html

 

 

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