RepRack Hanger for 16mm or 21mm

The original RepRack system uses EMT which is hard to find in Denmark in the correct sizes at reasonable prices.
Thankfully CNC Kitchen made a design using IKEA HUGAD and supplied STEP files, however, I found tubing in a local hardware store in 21mm and saw many options in 16mm, so I made two designs for people to use.
The cost of the tubing I found for broom were 1,9EUR, so 3,8EUR for a shelf of 1,4 meters besides printed parts.

The design fits on a MK3 bed when skirt is disabled.
If the rods are loose, secure with a M4 bolt or 3mm heat-set inserts (https://www.prusa3d.com/product/threaded-inserts-m3-standard-100-pcs/ ) (I have no affiliation with the link or CNC Kitchen)

I printed in PLA as its what I had available in black, but I suggest PETG if available.

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Made hole size different to fit different tube