I slightly over engineered a silica gel drybox solution for an IKEA Smala V = 22 l storage box. 
The main goal was to design a flexible system that might be used as a filament feeder system in the future. For the main purpose of drying filament this solution is slightly over engineered. The aluminum rods used have a diameter of 10 mm and a length of 300 mm. If you have different rod diameters available you are able to adjust the rod end piece according to the new geometry.

Printed in Overture Rock White PLA.   

• 2 x Silica gel container
• 2 x Silica gel container mirrored
• 2 x Connectors
• 4 x Endpieces for d = 10 mm rods
• 4 x Covers

@Yell
Thanks for Yell for supporting the Prusament filament spool model 
[https://www.printables.com/model/947784-prusament-spool-cad-model](https://www.printables.com/model/947784-prusament-spool-cad-model)