You are correct, I am literally dealing with inches. I have to back my boat into a cubby in my garage that the motor and poles fit into. The cubby is about 47 inches wide. My p4, with the slidemaster and the smallest p-2-2 brackets and the sportsman 2s were 44 inches wide. Im using the same brackets this time, and blades are basically the same length as sportsmans off the bracket, but the only variable I dont know is the plate, and an inch or two could be huge. I can measure the Atlas now but i dont have a slidemaster anymore to measure. Would like to have an educated guess before I order. Thanks.