It just fits on an Ender 3 V3 KE, but you might want to scale it down slightly in the slicer to accommodate the screws on the backside of the bed.
There are 7 slots where you can store cutting boards or anything else you'd like to keep there.
Printed with PLA.
Warning: Over time, the cutting board holder may wear out, potentially releasing microplastics onto your cutting board.