French cleat / hanger rail for Lego Modulex base board

Two types of French cleat / hanger rail for Lego Modulex base boards. With holes (slits) for wall mounting via screws.

type 1: classic French cleat. Vertical alignment via the slit/screws. Printed (standing as-mounted, with minor supports) with three wall loops and 20% infill I find them very strong. 

type 2: lower bracket. It has a 45 degree slope on both sides, tightly locking in the base board. It pulls the baseboard to the wall and, in combination with the two french cleats at the top, locks it horizontally.

Apparently some Modulex cleats have slightly different dimensions. Message me and I'll do a modified version :-)