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We have requirement of your above mentioned product. Details are as follows :Preinsulated ducting PIR (Polyisocynurate foam panel or board) ducts for internal use with accessories complete in all respect . The thickness of board shall be 20 mm, density of foam shall be 45 kg/m³, thermal conductivity 0.022 W/m.K. The aluminium foil shall be 80µ thick and provided on both sides and the foil shall be embossed. The fire and smoke classification shall comply to Class "O" of BS 476 part 6.7 Class A ASTM E 84. – 30000 sqft.