Flexible aluminum ducts, corrugated internally and externally, made by helically winding two or more layers of aluminum and insulating material.

ALA spa offers its customers two versions:

• Standard (Aluminum/Aluminum) made with a helical winding of two layers of aluminum. All-metal construction, high mechanical strength, perfect sealing, minimal pressure drop, fireproof.

• ISOLAIR® (Aluminum/ISOLAX®/Aluminum) is a flexible, double-walled, internally corrugated aluminum duct. Like the previous model, it features a third intermediate layer of ISOLAX® insulation. ISOLAX®, the result of our research, is a very thin, high-density material with a high degree of insulation. ISOLAIR® ensures duct insulation and reduces heat loss throughout the entire hot air distribution network.

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