The bubble top height mentioned in the storage covers for Class B motorhomes like the part # 290-12220 that you referenced is referring to the height of the camper above the standard height of the van. So you could measure from the roof line of your van to top of camper and if it's 24 inches this would fit. If it's a 36 inch bubble top you'd then want the part # 290-12230. An AC unit would not need to be factored in as well. view full answer...
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