WALLER extension duct
Extension duct for WALLER 64 heat recovery unit is a mounting element designed for installation of the device in walls of greater thickness than the standard mounting sleeve. The wall extension duct is made of durable, corrosion-resistant material, ensures tight connections and optimal airflow. The perfect diameter match to the WALLER 64 heat recovery unit guarantees easy installation and preservation of full efficiency of the ventilation system with heat recovery.
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