● Certified ETL by Intertek ● Two-stage filter system: pre-filter and a HEPA filter ● Removes harmful airborne particles ● High-quality PPT housing for long service life ● Removable dust cover for isolation of dust ● Pre-filter and HEPA filter for capturing smaller particles ● Non-Marking and Anti-Skid Rubber Feet for secure placement ● Covers an area up to 500-2000sq.ft ● GFCI outlet allows daisy-chaining ● Heavy duty portable filtration system ● Grooves on the sides for localizing wire ● Variable Speed Control Switch ● Filter Change Light Indicator ● Overcurrent protector; if the power supply exceeds 12AMP it locks it automatically