The R-1 with it's multiple synthetic layers combine a pre-filter consisting of a high performance cover mat with a final filter of progressively structured media, thermally bonded and treated with a special adhesive tackifier. Key Benefits R-1 self-supporting panels are designed for 95% efficiency on 10 micron particles and larger R-1 has a internal tackifier throughout the entire media R-1 is environmentally friendly, designed to comply with most landfill regulations   TEST SPEC INFORMATION Rated Media Velocity fpm) 100 Initial Resistance (in w.g.) 0.08 Efficiency on Particles >10 microns (%)* 95 Final Pressure Drop (in w.g.) 1.0 Max. Temperature (F) 212, peaks 250 UL 900 Classification Class 1 & 2 Thickness (in) 1.2 Availability Panels, Links