If the A/C is a Coleman Mach series unit,
this Maxxair shroud is well worth considering. The OEM covers are very flimsy and the price is about the same as the Maxxair. Unless you know that a used OEM cover is close to new, and price is really good, shop for best Price, best Shipping, on Maxxair.
Which ladder? To climb onto the roof, or up into the cabover bunk? If it's for the bunk, beware the ones usually sold by RV shops. The rungs are so narrow that they'll hurt your feet.
If God's Your Co-Pilot Move Over, jd
2003 Jayco Escapade 31A on 2002 Ford E450 V10 4R100 218" WB