Thanks for your question! This depends on your Grill model. Please check below:

1. Models that fit directly with the Kamado Mounting Plates (package included): Kamado Joe Classic II, Kamado Big Joe III, Primo XL 400 grill, Pit Barrel Cooker, Pit Boss Kamado, Cypress Ceramic Kamado Bayou Classic grill, Big Green Egg, vision grills Series classic, Primo Oval large, Primo smoker, Pit Boss ceramic Kamado, Broil King Keg 2000.
2. Models that fit directly without any adapters: Weber Summit Kamado, Weber Smokey Mountain, Backwoods Chubby 3400 Smokers that have round vent holes: Use one vent holes to insert the Breezo Fan, cover the other holes with high temperature flue tape (package included) : Kamado and Char-Griller Offset.
3. Smoker, Broil King Keg 5000 and CharGriller Akorn cooker.
4. Others solutions: Drill a 1.25-inch hole to which you can directly attach the Breezo fan and use high temperature flue tape to cover any gaps.
5. For big offerset smokers: You could cut a stainless steel plate to fit the opening in your smoker and then drill a 1.25″ hole in it in which to attach the Breezo through.
6. For Weber Kettle, please see instruction video here (You need to drip a 1.25″ hole to install the Breezo) : https://www.youtube.com/watch?v=s_JR379c4-c&t