The Polymaker PolyBox is the tool you need to store your materials in the most optimal environment. The PolyBox can house 2 different spools of 1 kg filaments simultaneously, or one spool of 3 kg. The diameter size of the filaments does not matter.
Build in Thermo-hygrometer
The PolyBox has a built in high precision thermos hygrometer, which allows you to monitor the humidity and temperature inside this Polymaker PolyBox. To prevent the absorption of moisture, the humidity can be limited to a maximum of 15%.