How big are blck lab golden retriever mix dogs?

Well, a Golden Retriever can grow to be a little over 3.5ft. A Black Lab can grow about the same height, but a lab I believe would weigh a little lighter than a Retriever would. A mix of a Black Lab and a Golden Retriever would grow to be about 3.5 ft. tall and weigh about 100 lbs. Please comment if you disagree, thanks!(: