Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:4089708.

• I lowered the front tabs to be just tall enough to still hold the pop in place while also allowing full view of the box graphics.
• Redesigned the hanging holes and filled in back so the nail doesn't go through.
• Resized it to fit pops without protectors, with protectors, and a 2Pack size
• Included a hanging guide that should help you space nails out for the individual pop racks.

I’m also using these nails, so you have an idea of the head size that should work.

Edit: I've uploaded a better Hanging Guide. It's tall enough to give you clearance to take the pop on and off the rack. I've also added a Hanging Alignment Guide, meant for lining things up for a second/third/fourth/etc row. It uses the rack above it to make sure things are nice and orderly.