Craftsman Shop Vac Filter Adapter

I have an old Craftsman vacuum. I was unable to find a filter at stores that would fit. I think you can still buy the filter on Amazon, but then I wouldn't have the opportunity to 3D print this adapter. I picked up a filter at the hardware store that was not the right size. I tried making it fit, but when I turned on the vacuum, it blew dust right out of the exhaust. So, I printed this little adapter to make it fit correctly. It works flawlessly.

Original Filter: Craftsman 9-17816

Replacment Filter: CRAFTSMAN Reusable Large Dry Shop Vacuum Cartridge Filter