This is the shelf I have. It's a Husky 5 shelf heavy duty shelving system. It can hold up to 1,000 lbs per shelf, so it's more than enough for some plants and lights. Once we get the shelves rearranged, there will be about 1.5' between each shelf, which is more than enough.

The only complaints I have about it are:

• It's 48" wide, so it's 2" shy of being able to fit 5 trays on it. As such, I let the trays on each side stick over an inch
• I wish it had one more shelf, as that would be perfect. I haven't been able to find a replacement or add-on shelf anywhere for it.

I wish I had seen this one when I bought mine, as I would have liked gotten it instead.

It's the same brand and same type of shelf. The only difference is that it is 60" wide instead of 48". That means you can fit 6 trays on each shelf.