- Aug 13, 2013 · I already had the 1hp Craftsman leaf blower, the 6ft piece of aluminum downspout with the 45 at the end, and the clamp cost me $10.00 US. I love it. It takes me 15 minutes to clean my gutters. I clean them when I mow my grass. I have an electric lawn mower, so the extension cord is already out...