Acoustic Flexible Ducting

Suitable for medium and low pressure applications

Complies with the fire requirements of BS 476

Substantially reduces 'in duct' noise problems

Acoustic performance - independently tested

Constructed from top quality materials

A highly flexible acoustic duct designed to meet the growing demand for lower noise levels. Interlock Type 900 is constructed from high attenuation spun bonded scrim inner core wrapped in 25mm sound absorbent insulation, reinforced with an aluminium laminate vapour barrier sleeve with a class 1 surface spread of flame.

Available in 5 metre lengths in bore sizes from 80mm Dia. to 600mm Dia. in 50mm increments from stock.

Special sizes and lengths can be manufactured to order.


Application: Insulated ventilation duct where noise is a problem.

Construction: Spun bonded filter inner core wrapped in 25mm sound absorbent insulation in a reinforced aluminium laminate vapour barrier.

Temperature: -20°C to + 120°C






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