Sonoduct AD-L thermal-insulated ducts protects air against
heat loss inside the ventilation ductwork. The perforation
improves the sound-insulating performance of this duct model.
The product is based on the standard Aluduct and includes
a 25 or 50 mm thick insulation with aluminium polyester cladding.
It is generally intended for building connections for plenum boxes,
air valves, or high-air-flow heat recovery ventilation systems.
