Sylvans most powerful unit on the market with Adjustable Ozone - Can adjust the Ozone output from 0-12.5G/hr. Sylvans most powerful unit on the market with Adjustable Ozone - Can adjust the Ozone output from 0-12.5G/hr. Ozonater with Timer - 1 hour with Hold Function. The size of this air purifier machine: 8 1/4" x 7" x 6" Net Weight 5lbs. For professional water and fire restoration companies only By making this purchase, I am verifying that I am purchasing this product for professional water and fire restoration use only and that this product will never be used for non-industrial purposes.