Commercial Air Scrubber & Negative Air Machine w/ HEPA Filtration, 3300 CFM

2-stage filtration system for advanced air purification. Capable of filtering/scrubbing/cleaning up to 4.7 Million cubic feet per day. Uses an efficient mix of airflow and filtration to create cleaner air. This Global Industrial™ Commercial Air Scrubber & Negative Air Machine is your solution for heavy-duty air purification. Its advanced HEPA filtration technology with 2-stage filtration system produces 3300 CFM of air flow, delivering 4.7 million cubic feet of clean air per day. An ideal solution for warehouses, factories, gymnasiums, and other large spaces, this machine is outfitted with 4in casters for easy maneuverability and is designed to fit through standard door openings. Featuring a durable steel body, this unit is built to perform in any commercial, industrial, or rugged environment. When used as a stand-alone unit, this versatile machine acts as an air purifier or it can be used as a negative air machine when ducting is attached to exhaust filtered air outside the affected area. The 20in ducting is available separately as an optional accessory if your space requires it. For optimal versatility, this air scrubber has daisy-chain capability allowing you to link up to three units using a single power outlet. Limited 1-Year Warranty. The first stage uses 4 Pleated MERV 9 Pre-Filters to collect and trap pollen, hair, and larger dust particles. The second stage uses 4 HEPA MERV 16 filters, with a 99.97% efficiency rating, against 0.3-micron particles to catch bacteria, allergens, dust, mold spores, and fungi. Change pre-filter every 3 months for optimal performance. Indicator light illuminates when the HEPA filter needs to be replaced. Includes complete set of filters. Quiet running produces only 75 decibel.