Print these 2 shelves flat side down. There is a left and a right shelf. I used snug supports and they removed in seconds. You can slide 3 Milwaukee Packout bins underneath and between the shelves to store smaller items. I ended up with a lot of Packout bins because I switched some organizers to Gridfinity. The middle bin can be the 2x wide one by spacing the shelves apart and adding a lid to the middle shelf. Happy Printing!