MSA 10045035 Calibration Gas Nitrogen, + 5% Accuracy, CH4 CO H2S O2 04524200458 Color Code Green Color Code Green GREENGUARD Gold Certified Light Reflectance 80 % Coverage 64 sq ft Texture Medium Features Economical Resistant To Class A Fire Retardant Green Environmental Attribute Product Contains a Minimum of 20% Post Consumer Recycled Content Resistance Properties Sag Resistant Recycled Content Range Standard Recycled Content (49% or Less) Light Reflectance Range Standard Light Reflectance (82% or Less) Fire Retardant Class Class A Tile Edge Type Angled Tegular Fire Performance Class A Chemical Formula CH4 Calibration Certificate NIST Traceable Chemical Formula CH4