Does Kirby make a smaller upright?
Not to my knowledge. I think some of the older models (pre Generation series) had slightly narrower power nozzles by 1 or 2 inches.
The Sentria II is currently the only model sold by Kirby. It has a nozzle width of 14 inches.
Check out the link below to view the entire history of the Kirby Corporation with pictures of almost every Kirby model ever made.
[URL unfurl="true"]http://www.kirby.com/about-kirby/our-history/[/URL]