Stabilizer for Spool holder for Prusa Lack Enclosure

This model is a stabilizer for the "Spool holder for Prusa Lack Enclosure” from user Squirtle: https://www.printables.com/de/model/17014-spool-holder-for-prusa-lack-enclosure.

I'm using this spool holder already for a while now and am pretty happy with it, but the holder bends quite a bit when a spool is placed on it. So I decided to build a stabilizer which can be attached to the spool holder via the parallelepiped cutouts.

Modelled with FreeCAD 0.20, Printed in PLA 0.2mm with support below the connection pins.