An anonymous builder shared this great idea for modifying Costco wire shelving. Here's what they said about the process.

"Attached are some photos of a small project I recently completed using Maker Pipe fittings.  I modified some wire shelf units manufactured by Trinity and commonly sold by Costco. The rods are exactly 1” in diameter, so I used ¾” tee connectors.  The connectors had to be pre-bent around the bars with large channel lock pliers for best results.  The supplied screws with the ¾” connectors are almost too short so it works better with the slightly longer screws. You have a great product!"