211 HIGH PERFORMANCE ACOUSTIC INSULATION FOR A QUIETER ENVIRONMENT ArmaSound® RD 240 • Optimal performance at lower thickness • Excellent sound absorption behaviour • Combined acoustic and thermal properties • Easy application and low maintenance • Designed for use in demanding environments • Compliant to ISO 15665 Classes A to C and Shell DEP 31.46.00.31- Gen Class D • Satisfies acoustic classes 6, 7 and 8 according to NORSOK R-004 • Highly hydrophobic, open-cell structure designed to resist water ingress • Optimum density, air-flow resistivity and complex pore geometry for maximum acoustic benefit