not many 232 owners around.
CW sells and installs them, that's where we got the one for our 23SS.
all you need to do is provide the slide's dimensions.
go to Dometic or Carefree, the two slidetopper manufacturers and you'll see instructions on measuring.
in fact, CW's website has the same thing. just measure what they ask for and they'll tell you what one will fit.
Dan-Retired California Firefighter/EMT
and Zoe the Wonder Dog(R.I.P.)
2016 PrimeTime TracerAIR 255, pushing a 2014 Ford F150 SCREW XTR 4x4 3.5 Ecoboost w/Max Tow Package