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Rockwool Lamella Mat is formed from strips of Rockwool mineral wool bonded on edge to a flexible outer facing. The method of construction provides a strong and resilient mat which will resist flattening at bends and corners. Lamella Mat is particularly suitable for the insulation of heating and ventilation pipework and ductwork and as an overlay to upgrade existing insulation. Ductwrap provides thermal and acoustic insulation for plant rooms and boiler houses. It is used for the thermal insulation of cold water storage, feed and expansion tanks. Ductwrap is recommended for temperatures of up to 230°C.