I bought my smoker generator back in 2017ish.. Since then all sorts of cold smokers are now easy to buy.. I still use Old school. Mesh grate. and wood pellets. If doing 12 pounds or more of Cold Smoked Cheese. will dig out the Smoker generator.
Bad part!. They drip Black GOO.. so make sure you have a Catch pan under unit.
this is what I bought many moons ago..
https://www.amazon.com/gp/product/B008DF6WWE/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
Forgot to add.
I use it to feed smoke into BBQ Vent port. Which I added a 4" x 6" Galv Pipe, Which, goes to the smoker Gen. with a up slope. And Two Computer USB fans inside BBQ to help draw the smoke & Circulate.
Works good On Cheese, Garlic Cloves, Whiskey, Rock salt, Black Pepper corns, Habranero peppers. ;-)