model files are designed to fit refills from recyclingfabrik Germany. if you need different dimensions use the freecad file and change the parameters (or ask nicely and i may upload the model with your required dimensions ;))
frame width: 6mm
outer diameter: 201 mm
inner diameter: 80mm
hole diameter: 50mm
there is ample space to brand-agnostically add filament stickers and a way to secure the filament end within the frame.
total spool width: 57mm and 72mm respectively (taking 45mm/60mm spools)
The author marked this model as their own original creation.