Max Contrast +20 coating provides a 20% increase in reflectivity at 15% off-axis as compared to our standard Max Contrast coatings. Best suited for rooms with high ambient light levels - Use with projectors producing >29 ANSI Lumens per square foot of screen area. To create a Max Contrast Goo Screen you will need to apply both a Max Contrast Reflective Coat followed by a Max Contrast +20 Finish Coat.