I used the Smoky Joe Coal grate. The bottom one that holds the coals off the bottom of the chamber. It about 9" across.. The walls are 12" tall and it work perfect for about 16-18 hour cook.
"The most reliable, easiest to make at home, Smoker "The UDS" W/ an Auber temp. Controller w/ 20CFM Blower.
$5438.25 Total BYC Smoker!!
Some people spend an entire lifetime wondering if they made a difference in the world. But, the Marines don't have that problem.
Ronald Reagan, President of the United States; 1985