Full Size Conversion Kit Bed Rails for Eco-Chic Clover & Dorchester Cribs (Espresso)

Q: In addition to the two bed rails, are the four wooden slats also included in the Dorchester conversion kit?

No, only two rails and screws to attach to the bed headboard and footboard

Q: Will this fit the childcraft Sheldon 4-in-1 convertible crib?

I am not sure. I have the Appleseed Davenport and these worked pretty well. I only bought these because the manufacturer no longer carried the ones for my crib. It looks like ChildCraft carries the ones for the Sheldon crib on their website for 20 dollars more. Sorry I don't have a better answer. I would be worried about the holes not being in the right place to line up with a different brand crib.