Filament spool wall shelf for EN25 pipes

Why one more spool wall mount? 
I was searching for a cheap version that uses EN25 PVC tubes which are commonly available in germany.

When using ABS and the settings below you should end up with 50g of filament per holder.
As you can see on my pictures it easily can hold six spools on 50 cm of space.
If you plan on installing multiple rows as seen on my pictures you should leave a gap of 3cm between the mounts to allow an easy access to the spools and boxes.

Printing:

• ABS
• 0,2 layer height
• 6 wall loops for strength
• 30% infill (but in fact it will be solid)

You can use my .3mf files to use my settings or the .stl and your own settings.