Wall Mounting Duct for Zehnder ComfoAir 70 Length (mm):900 making service calls or system

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Wall Mounting Duct for Zehnder ComfoAir 70 Length (mm):900 making service calls or systemThis circular wall liner is available in two lengths 600 and 900mm and is designed for exclusive use with ComfoAir 70 Single Room Heat Recovery Unit installations. Select length according to depth of finished external wall and cut to fit if necessary. Old Part Numbers: 527 005 200 (600mm long) 527 009 120 (900mm long)