Tuff-Boy 999 Line of water-Based Dry Fall Flats are high hiding coatings formulated for interior application via conventional or airless spray equipment only. This coating will not yellow, is low VOC*, and has no harmful solvent odor which will allow one to spray in areas while people are still working. Tuff-Boy 999 White will reduce lighting requirements and is ideal for commercial and industrial areas where dry overspray characteristics are desired. Overspray from the Tuff-Boy 999 Line does not stick, but falls to the floor as a dry dust which may be swept up without damaging the surfaces on which it has fallen. . Because Tuff-Boy 999 is a water-based dry fall coating, a large amount of moisture is released into the atmosphere during application. Proper ventilation is required to ensure that humidity levels do not increase to the point that dry fall no longer occurs.