Twice as thick as the one you buy at the hardware store and made of food-grade stainless steel. Yes, it’s expensive. It also has your logo on it, so there’s that! This thing will last a looooong time and look good doing it.
For perspective, the standard Weber chimney is 12” tall and holds 500 cubic inches of charcoal.
Note: Stainless oxidizes clear under normal conditions. Under high heat, the oxidation will thicken and change colors, as seen in the pictures above. This doesn’t harm anything, but it is visible. It can be removed with baking soda, but it will reappear upon heat. Please know that this stainless will outlast anything from the big box stores and perform for years to come. Please also know, however, that with use it will not continue being clean and perfect like silverware. It will patina with use.