In the case your Variera shelf is not tall enough for you, I have designed a kind of foot that can be added at the bottom, no other hardware needed.

The foot has a base part with a slot and the screw on top, and a lid part that secures in place the shelf between the base and the lid. You do not need any other metal screw, and this model can fit both the shelves dimensions.

I have uploaded one file for the lid (which is always the same), and multiple files for the foot for various rising heights. If you do not find your ideal height, feel free to customize the design with OnShape (footHeight is the configuration variable you need to change) → link to the design.

Printed in PLA, no special settings used.