E3D Hemera 4010 Fan and BLTouch Duct

Other Hemera ducts are for large blower fans, often at an angle, which is fine for bed-slinger printers, but severely reduced my Y-axis on my Ender 5. The bottom surround is definitely someone else's design, but I tried so many so long ago I can't recall where I found it - sorry!

How I Designed This

https://cad.onshape.com/documents/2b685bf9a8b6b13a54f6bfe3/v/7ce8c975ddce54f650143b0c/e/5c7a0edadd2c2948ec484e04?renderMode=0&uiState=6648af0d9da2b000fd1e1acb