Hmmm... I've R&R lots of trailer bearings when I hauled for a living and found the hard way axle makers bearing/seals recommendations aren't always whats on the spindle/hub.
Best bet is pull a hub and check the seal number...then remove all the race/bearing sets and get the numbers from them.
If your (or others) are handy with dial calipers and outside mics use those to find bearings/seal inside and outside measurements. Then let the bearing store match up the numbers.
We've had members say they carried a set of bearings/seals for several years and found out later they didn't fit.