FLSun Delta 5015 Blower Fan Adapter

I have taken Pienjo's design and modified it to fit a 50mm Blower fan with a 15x20mm outlet. https://www.aliexpress.com/item/5pcs-3D-printer-12V-24V-DC-0-15A-50mm-Blow-Radial-Cooling-Fan-5015-extruder-hotend/32808868816.html as an example.

The new fan friction fits into the opening, I also included two screw holes if you would like to use them as well.
Thanks for the inspiration Pienjo