60 gram Boveda provide hassle-free maintenance of full-size humidors and Humidor Bags. Every Boveda RH is accurate to +/- 1% in an air tight environment, which humidors are not. It’s common that the actual RH of your humidor will stabilize up to 5 points lower than the Boveda RH you’re using, due to humidor quality and ambient dryness. …