Height of a class C

My 'C' is lower than 12 feet, because it fits in my garage with 12' x 12' doors. (Checked by a friend on a ladder for my first entry). But going thru Canada, I was cruising along with the speedometer marked in both MPH and KPH until I came to a bridge with the height marked 5 meters. No traffic, so I pulled over and did the conversion. 12 feet is 3.66 meters. That's marked on my dashboard now.
The conversion table is 'www.onlineconversion.com'. A handy tool for home as well as on the road. It will convert just about anything to anything.