Without knowing your particular setup on your Dutchmen Travel Trailer, the best way to determine your inner bearings is to pull the remove the hubs and find the number on the bearing itself. You can also measure the spindles where the bearing sits. In many cases, there can also be an axle tag on your axle beam that tells you information about the spindles you have.
I went ahead and attached a chart that shows the measurements you need to help determine your bearings. The best way to get... view full answer...
The overall dimensions of the Valterra Frame Assembly and Glass # A77051 are 15-3/4" wide x 24-3/4" tall. Just the frame is part # A77008 and those are the dimensions for just that. view full answer...