Summary

Hatchbox original Filament spools worked perfect with my filament drier enclosures. The newer 2025 units the inner diameter has been changed to be much bigger. Also, the sides of the spool are open so you can see how much material is left. These newer eco friendly filament spools needed an insert to work with my filament driers. They have also been slotted to allow for the tail end of the filament a place to sit.