Hey yall, there simple cheap concrete bricks from the home store. Bout 44 cents a piece ifin I remember right. I just put two on each side a the burner on the bottom a the smoke box.
They hep the temp come back up faster after yall have the door open, evens out the temps a bit. Nothin technical bout it really, works like them brick pizza ovens, get a larger mass hot an it will radiate heat back out when it drops below the heated temp.
Fer less then 4 bucks they are well worth the cost. I have nice steady temps in my smoker an don't take long ta get right back ta temp after a spritz er reload a wood. These bricks work fine cause we are at such low temps, not like in a boiler er high heat cooker, were lookin at less then 350 degree's so bout any brick yall put in there should be fine. Like I said, mine er just cheap concrete paver bricks from the homestore.
If yall need more info, just ask. Good luck.
