comes with the whole thing you see. 7 air valves, one blower motor, motor bracket, clamps and versatile hose. simply buy percent tubing 1 1/2 inch and make the system as big or small as you wish to have. you’ll be able to hook a dimmer switch as much as this motor to keep an eye on the air go with the flow. running the blower at 50% power with a dimmer switch will double or tripple the lifetime of the blower motor.