Remix of 0ndsk4's Carbon filter for V-Core with enhanced exhaust geometry. Posted here with permission of author.
Exhaust now blows air more sideways so bed is not cooled from below. Exhaust angle is not changed, only position. Basket bridges improved for easy printability and other miniscule changes 

There is version for 300, 400 and 500 mm bed printer.

STEP file is in ZIP because it has 130 MB uncompressed.

STL guide: STL contains all of the needed bodies I think. 

1. Load in slicer → Split to parts 
2. Delete all the parts you don't need 
3. If printing Basket, leave “Vanes” (no HEPA filter) or “Grid” (incl. HEPA filter) 

BOM: 

BFB0712HF fan, eg: www.aliexpress.com/item/1005004252008775.html 

M3 Brass insert; length 5mm; OD 4.5mm

M3 bolts of various lenths

Seek help here: 

https://discord.com/channels/1017933489779245137/1039282050978566214

https://github.com/nevermore3d/RatPack 

Changelog: 
V2: 300 mm added

V3: data correction - files were exported with some features suppressed (eg. lid holes fix); BOM added. Licence change