If I am not mistaken the 2019 Forest River Cardinal Luxury 3850 fifth wheel has six round foot plates. I am not sure on the size. To get the correct size you need to measure from one side to the other across the bottom of the plate. If they are 9" I recommend the SnapPad Jack Stand Pads for 5th Wheel and Class A Motorhome - 9" Round Jack Feet - Qty 6 Item # SP54FR6. This is the only kit with all 6 the same size.
We do offer other sizes depending on what you have however, they are going... view full answer...