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Sorry read the quote...
What is the difference between
Black Max® Mercalloy 3 blade 16x16 RH Part # 16440CP1 and
Black Max® Mercalloy 3 Blade 16X16 RH Part # 16440A45
Very rookie question here but hoping somebody can help.
Further Bondo's 100% correct post..
My guess based on your picture is that your boat is about 21 ft. Would think that for a boat that size and style