Keystone Cougar 310SRX make and size of pin box

74vette wrote:
Go to pullrite's web site and get the information on plate sizes and where to measure. Call the owners of the trailer and have them get you the measurements from the pin box. I did this and it worked well. I also have the single bolt capture plate.

The seller is a little confused about how to measure (I'll leave it at that)

I was hoping someone on here had the same rv and could help out with the model of the pin box and measurements.

Thanks for the reply.