The pressure barrier for the blackbox when using the whatsminers blocks the PSU exhaust fans, unless bent. This piece is designed to fit over the existing fans, using the existing fan screws and simply extend the air channel. This allows the PSU to have more clearance.

The pressure barrier fits over these extensions as its the same size as the fan. There is also a lip that protrudes around the tunnel, so that you can line it up with the ledge of the shelf on the blackbox and use foil tape to tape around all the edges with ease.

NOTE: Print with lip on the surface