Apply Spray Mask in door jambs, engine compartments, wheel wells, frames and underbody to prevent overspray from bonding to the painted surface and glass. It will seal off the dirt and grime eliminating airborne contaminants. Dries to a clear, dry film; vehicle can be moved around the shop. Spray Mask can be applied with the RS-708-GUN. Spray Mask is solvent-free and easily rinses off with water. Avoid leaving in direct sunlight for long periods of time.