I have varied spacing, and my rollouts can be ajusted to wherever I want them. Two of them are spaced at 12 inches, and they work well for lots of things. If you buy cereal, you will want one with about 17 inches of space to allow for tall boxes.

How many rollouts are you getting, and what items do you plan to store it there? Like jellytoast, mine are adjustable, though once set and filled, I've never adjusted them. I left a larger height at the bottom in mine to store 2L pop bottles, and large flour bags etc. Big items that are pretty easy to grab and pull out. (we also have the trap for our EasyVac there, so didn't want to cover it up with a pull-out)I also have a higher height for the top one for cereal boxes.

Lorenza-. I totally missed this post. I am sure you don't need the info - just wanted to apologize .