Tileable 51x42 (Taller than wide)
Optimally built to tile top to bottom for long smelting runs.
The inputs are on the outside (left and right) coming in from the top.
The output is in the middle going toward the top. The content stays unmixed for dual ore setups.
<a href="https://imgur.com/vyQHmzR"><img src="https://i.imgur.com/vyQHmzR.jpg?1" title="source: imgur.com" /></a>