Premier Art Eco Gloss Shield Inkjet Protective Coating - Quart Eco print Shield may be applied by roller, brush or High Velocity, Low Pressure,spray gun. HVLP spray guns are very efficient in application, and are easy to use. Eco Print Shield has been tested and approved by Epson. Eco Print Shield has been Validated by HP. Print Shield and Eco Print Shield are the only coatings with the Wilhelm Certified Seal. Non-Yellowing - Longer lasting prints