Yeah you can fit the 20's in with a little work, I have found that 16" load easier without wiggling and burning my hands or gloves, and have tried...
The inside door frame is 18" wide and depth of firebox is 12" on my homestead.
I have the Homestead set just in front of the firplace opening, front of bricks line up with back edge of stove top and the rear metal of the stove...
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