I can safely say it can hold 1,900#'s (the weight of my trailer  🙂 )

I don't know what the weight limit is but there are formulas that you aren't picking up the full weight of the trailer because the weight is distributed to the wheel on the other side and the tongue jack.  I have seen people use them on single axle TT.  The thing about a double axle TT is if there is enough room between the tires to slide 2 BAL's under the tires.  I have seen it done but I didn't pay attention to what brand trailer because at that time I only had a single axle popup.