- Highly efficient decentralised (room-wise) ventilation unit with heat recovery - Meets the requirements of EN13141-8 with interference pressure sensitivity up to class S1 (20 Pa pressure stable) - Installation in round duct with Ø 160 mm - Contains a ceramic (heat) storage element, EPP foam housing, thermal insulation, G3 filter and ec-reversing motor with increased sound insulation and sound insulation set - Further sound insulation and wind protection measures are available as an option