Poulan Pro 961820015 136cc Single Stage Snow Thrower 21-Inch Base Product NewPoulan Pro 961820015 136cc Single Stage Snow Thrower, 21-Inch. Style: Base Product Brand: Poulan Pro. Product Dimensions: 31.2 x 22.8 x 25.8 inches. Item Weight: 85 pounds. Item model number: 961820015. Powerful 136cc Poulan Engine for 7.11 foot-pounds of torque. Uses durable auger.