Originally Posted by Pappy
It only look big because the walls are 2 3/8" thick.
The inside is 18x18-24" deep. Just the right size accourding to the smoker build calculator.
Correction: The inside dimensions of the fire box is 20x20-24 deep.
Performer, UDS, 2011 WSM, Frank-in-Weber, 120 Gallon Offset, IQ-110, ET-732