This adapter can be used to attach to your (offset) smoker or UDS. Use this adapter if you want to be able to take your fan out after you finished your cook so you can keep it inside your house. If your smoker is stored inside your house, you can also use the plate adapter.
It comes with two rings and nuts to secure it in the wall of your cooker after drilling a 20mm hole. The thread can also be used to screw it onto standard piping as is common to the UDS.
If you want to attach this adapter to a kamado type BBQ, please check this adapter, for it has a piece of sheet metal you can use for your cooker’s air inlet. Small adjustment to the sheet metal may be required depending on the size of the air inlet (brand and size dependent). A picture of this adapter is also included.