I have a Klose 30" diameter X 8 ft. long with upright. When up to temp I use a split every hour or hour and a half depending on the wind and outside temps. I have an insulated firebox.
Plan on being up all night to feed your pit fuel.
You have never really lived until you have done something for someone who can never repay you.
KC I miss your advice.
Heavily medicated for your protection.
Klose Mobile Pit
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Gifted to me my Pit Barrel Smoker