Pair includes a 16L high contrast +20 finish coat and a 16L high contrast reflective coat. High Contrast +20 coating provides a 24% increase in reflectivity at 15% off-axis as compared to standard High Contrast coatings. Best suited for rooms with moderate ambient light levels - Use with projectors producing >20 ANSI Lumens per square foot of screen area. To create a High Contrast +20 Goo Screen you will need to apply both a High Contrast Reflective Coat followed by a High Contrast +20 Finish Coat.