Product D0110DOW, D0120DOW, D0110GOW, D0120GOW are "from wall or floor" integral sleeve dynamic curtain sort fire dampers. Design D0110GOW and D0120GOW are made for supply or return ducts that terminate at a grille or register. Model D0110DOW and D0120DOW are designed for as a result of penetrations (ductwork connected to either https://lukassguiv.shoutmyblog.com/35924700/top-guidelines-of-dampers-for-industrial-sector