TMB's BAC-W46551394 4-Stroke Backpack Leaf Blower, 1.5 HP has a powerful engine. The 4-stroke, 37.7 cc engine is 1.5 HP for optimal blowing force and fuel efficiency. It is highly efficient with a fuel tank capacity of 0.67 l, engine displacement of 37.7 CC - providing all the tools for a powerful blower with maximum efficiency. The airflow capacity is 580 CFM, which is capable of powering through the toughest wet leaves and debris. The convenient backpack design makes this blower easy to use and transport. With an ergonomic design, this backpack blower prioritizes comfort for extended use. It is even designed with a gap between your back and the blower body to provide airflow and prevent you from overheating. At a lightweight 17.5 lbs., this blower is easy to maneuver in. It is ideal for homeowner use and some commercial applications with a noise level of 98 DB.