21 inch. Starts on first pull. New spark plug. New carburetor. New fuel line. New fuel filter. Electric start with extension cord, which is so helpful for people who have a hard time pulling on the rope. Most 21" snowblowers don't have an electric start. Notice the crank to adjust the direction of the chute. Most 21" snowblowers don't have the crank. I use ethanol-free gas mixed with Amsoil Sabre smokeless oil (the best) and treated with Amsoil Quickshot stabilizer and cleaner (the best). $200 cash only on a first come, first serve basis. Pick up near Lorain County Community College, Main Campus, Elyria, OH. Or if you don't live to far away from me, I can deliver it. I will also consider buying your old snowblower.