Three homemade l brackets to hold soup can in side of box. Used the three screws in the side and 3 self taping metal screws to the can. flex tube taped to the can. 3" hole in the back of the mail box with one adjustable 3" fitting taped into hole in back of mailbox, pressure fit and it holds with no leaking. Flex duct taped to other end of fitting. Fitting and connections taped with aluminum AC duct tape. No mods made to the smoker. Thus warranty not voided.
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