HEPA Filter 4" duct adapter

thingiverse

I designed this adapter to seamlessly integrate with the HEPA filter found on Thingiverse, specifically reference number 2285882. This modification enables users to effortlessly substitute a standard 4-inch duct for the conventional 120mm fan setup, thereby increasing versatility and flexibility in their system design. Furthermore, the additional space provided by this adapter allows for the incorporation of a custom-cut charcoal filter, effectively broadening the scope of potential applications for this device.