Design D0110DOW, D0120DOW, D0110GOW, D0120GOW are "outside of wall or flooring" integral sleeve dynamic curtain type hearth dampers. Product D0110GOW and D0120GOW are made for supply or return ducts that terminate in a grille or register. Design D0110DOW and D0120DOW are suitable for by way of penetrations (ductwork connected to each https://beaubrhvk.blogsumer.com/36135886/details-fiction-and-dampers-for-industrial-sector