The Diff-R1 Panel is specifically designed and engineered to obtain the highest possible level of performance from all Cross and Down draft type spray painting booths. The air entering media is a dry synthetic pad designed to capture larger particulate. The final stage media is a selection of high performance fibers in a multilayering technique to balance high 10 micron efficiency with long service life. A non-migrating adhesive is applied to prevent particles from unloading once captured. The media is heat sealed around a wire grid for support.