XPOWER X-3300 4 Stage All Washable Filtration System Air Scrubber All 4 stages of commercial-quality filtration are washable and reusable- saving from costly filter replacements Lightweight, compact and durable ABS plastic (the same that football helmets use) housing design Powerful and energy efficient 1/2 HP external rotor induction motor, low 2.3 Amps draw with 600 CFM airflow Variable speed control switch, filter change light indicator & stackable up to 5 units high for easy storage ETL/CETL safety certified & 1 year limited manufacturer warranty