Review on EZ Shelf DIY Expandable Shelf (No Hanging Rod) - 28” - 48” - White - Easy Installation - Mounts to 2 Sidewalls - Strong Wire Shelving Alternative - Shelf Kit (EZS-SW48) by Joe Comforti

Does exactly what I wanted. My husband was impressed with my creativity and use of space. My pantry had a lot of overhead space that wasn't being used. I considered several alternatives from materials to shapes. I bought two devices to expand my storage. After I installed the first shelf, the second was easy. It took training on my part, but I managed it. Lets light through without letting objects through. The width is easy to adjust to fit my pantry. Didn't have to use middle brackets. The only downside would be that two different bars won't tighten/lock when adjusting, but others will, so it's not a big deal.