Attributes . Core Contains String Packing Between The Helical Convolutions In Trade Sizes 3/8" Through 2". Acidic Gases Are Virtually Eliminated As Products Of Combustion. This Product Is Ideally Suited For Installation In Confined Or Enclosed Areas Where Construction Materials Must Have Limited Smoke, Low Flame Spread And Low Toxic Gas Emissions In The Event Of Fire. Such Applications Include Mass Transit Vehicles Where Cea Is Extensively Used For Wiring Harnesses Within And Under Passenger Rail Cars. Other Applications Include Use In Underground Subway Structures And Tunnels. . Names