Here you go.
Two J brackets bolted to frame cross member. Tube held on with stainless hose clamps.
This was on my 2003 Cardinal. I have since mounted the ladder on the ceiling of the pass through compartment my 2013 Cedar Creek. What makes this mount nicer is it's in the locked compartment and the ladder can be removed from either side.
C.B.
CBVP2004~FORD~F350~CC~LARIAT~SRW~SB~4X4~6.0D~
AUTO~PULLRITE 16K SUPERGLIDE~DEMCO GLIDERIDE~
PRODIGY CONTROLLER~C-BETR MIRRORS~EMS-HW50C~
Butch/Barb=2013-Cedar Creek 36CKTS
Kris/Katy=2006-Cherokee 32B