When I get home, I will take a picture of the back with a tape measure and text it to you. Text me at 307-250-5916 and I will respond with that photo sometime tonight.
The Kifaru Frames come in two sizes. 24" and 26" most people get the 26" unless your 5' 8 or less. The frame is very adjustable, there are lots of video's on Kifaru's you tube page showing how to adjust it up. Im 6'4" and use a 26" frame and my buddy is 5'9" and uses the same frame.