Product D0110DOW, D0120DOW, D0110GOW, D0120GOW are "from wall or ground" integral sleeve dynamic curtain variety hearth dampers. Model D0110GOW and D0120GOW are created for source or return ducts that terminate in a grille or sign-up. Design D0110DOW and D0120DOW are created for through penetrations (ductwork linked to both sides) where by https://dampers-for-industrial-se02334.ziblogs.com/37186562/helping-the-others-realize-the-advantages-of-dampers-for-industrial-sector