Thanks. Just did that. They are telling me 20" to top of coupler. My trucks receiver open is a little under 19" to top of opening.
Trying to determine proper height setting for the ball to get initial setting before driving to my camper. My friggin deal dealer a crap job of installing. Trailer no level. Ass end is too low and with a 23B already being low that isn't good. On the standard Reese shank 2" drop they had be on the highest setting with shank in drop positions. With these measurements looks more like I should be at the lowest setting.
2009 Jay Feather 23B
2012 Silverado 1500