How is the length of a 5th wheel measured?

[Full Monte]

I'm thinking about a 5th wheel, but have a slide-in camper right now.  Is the length of a 5th wheel the overall length, or is it from the hitch to the rear end?  Also, what's the standard width of one?  I need to figure out if I can park one of these in a spot I have picked out.  Thanks!

 

[tvman44]

Ours is measured from king pin to back bumper.

 

[Gary RV_Wizard]

It's usually stated as the overall length in ads and salesman-speak. It may or may not include the forward extension of the kingpin, but that's only about a foot difference.  The "model size" will actually be the interior usable space, so a Model 28xyz is typically a 30 foot (overall) trailer. Neither one of those numbers is the length that extends behind the tailgate on the truck - that's 4-5 feet less.

The usual width is either 8 ft or 8'6" (widebody).

 

[mike eddleman]

My 36 foot Bounder is 36 foot from the back of the drivers seat to the rear bumper, It's 40 foot from front bumper to the rear bumper

 

[Full Monte]

Thanks for the input!  That's a help!

 

[Gary RV_Wizard]

Odd that the exterior is so long, Mike. My 40 foot coach, also a Fleetwood brand, is 39'10" overall and about 36'6" from the dashboard to the rear wall (inside a wardrobe).  Since mine is a pusher, the cockpit area swivel chairs and a cabinets) are very much a part of the living space, but I don't count the dashboard itself. I suppose the over head cabinets could be considered part of the usable area, though. That would make it a bit over 38'.