Kenworth Truck cab and sleeper attachment

This all depends on the type of truck,different manufacturers use different methods. Some cabs are mounted independent of the sleeper and a heavy boot made of a flexible material is used to make a weather tight seal between the cab and sleeper.And in other types the cab and sleeper are asingle structure.Some pics may be a big help.I am not all to familiar as I have worked on very few 900 series Kenworth tractors. These are the two most common types,a quick google search may help also.