87 ArmaFlex® Duct Alu DUST & FIBRE FREE ARMAFLEX INSULATION FOR DURABLE PROTECTION OF AIR DUCTS • Prevents condensation and heat losses on cold and warm air supply ducts • Available with alu-foil covering for a smooth and easy to clean aesthetic finish • 1.5m wide sheet available to match ductwork panels • Flexible material, easy to cut and install with no PPE required • Closed cell structure for water vapour transmission resistance