Product Detail Ductable or stand-alone air cleaner for commercial or light-industrial environments 2-stage filtration with 100-percent HEPA filter and 65-percent ASHRAE filter 3-speed, direct-drive, forward-curve blower/motor circulates up to 2500 cfm Can be positioned to create negative or positive air pressure Measures approximately 26 by 48 by 26 inches; 2-year limited warranty . The "Honeywell F116A1021 Commercial Self-Contained Ductable 2-Stage Media Air Cleaner" is best product for you. We recommended Honeywell F116A1021 Commercial Self-Contained Ductable 2-Stage Media Air Cleaner