SMP500 Central Vacuum Power Unit offers superior filtration and durable metal construction. This hybrid power unit can be used with or without a bag and is designed for homes, condos, and townhomes up to 4,500 sq ft. The SMP500 features a soft start motor, 4-gallon dirt canister, and a self-cleaning filter made with Gore-Tex Fabric and the option to use a disposable dust bag. This central vacuum system does not require venting and the intake can be used on either side of the unit. Mounting brackets included for easy and secure wall mounting.