starter piece. A triangular wire shelf – very much not a rectangle, though as a right triangle it does have one 90-degree angle, so some may still doubt your creativity when you claim this. Compatible with Nexel or similar wire shelving. It's NSF rated. This means Not Safe ForSquares I think.
I might have some of the plastic bushings that hold it onto the posts if you ask nicely.
Measures 24” on each side, except for the hypotenuse which per Pathagoras, would be longer. I didn't measure, but I believe it would be sqrt(2* 24^2). You're welcome.