One of the pictures shows standard US sized cans being place onto the top shelf (when raised to the upper most holding position).

A more cleaver approach should have been to duct the airflow across all shelves in the back so the glass panel that connect directly into the door front and back plastic unit don't restrict all shelf to shelf air flow.

The stoppers allow you to pull out the shelf wo it falling

Needs more blue lights below the top shelf.

Better case should have been taken to the shelf positions available or a more clever means of moving them up and down with more position options instead of the plastic bump outs should be available.