The high back features a back that is taller than the arm where the two meet.
Choose your chair & a half's back style.
Take a look at the area where the arm meets the back of the furniture piece to identify which style your back is. Click on the appropriate back style.
The scroll back features a side panel that forms a scroll around the top of the back.
The tuxedo back is a back that is the same height as the arm.
You may say it is a mitered style of arm.