Tommy,
That pic is a little deceiving, but my grate is about 4 inches off the bottom of the firebox. Although I clean out my box after each cook, I can run about two 10 hour cooks before I become concerned about ashes impeding airflow. When you burn wood, you will be very surprised at how little ash accumulates. Actually, I was even more surprised at how little wood I use during a cook.
That pic is a little deceiving, but my grate is about 4 inches off the bottom of the firebox. Although I clean out my box after each cook, I can run about two 10 hour cooks before I become concerned about ashes impeding airflow. When you burn wood, you will be very surprised at how little ash accumulates. Actually, I was even more surprised at how little wood I use during a cook.