8/18/26 I ordered new plastic shelf holders. Fire survivor, I washed it twice of soot and placed clamps to hold the missing plastic shelf wedges that melted. Would work nice for garden starter pots or your idea.
It's a nice wire rack shelf, if I can't get 50 for it it, I will put it to use here.
As pictured, text ak-242-83two4 if your interested.
John in Eagle River by Fred Meyers.
Wheels still roll and lock nicely.
Size is a guestimate.