Design D0110DOW, D0120DOW, D0110GOW, D0120GOW are "away from wall or ground" integral sleeve dynamic curtain variety fire dampers. Design D0110GOW and D0120GOW are made for source or return ducts that terminate in a grille or sign-up. Design D0110DOW and D0120DOW are designed for by means of penetrations (ductwork connected to both https://dampers-for-industrial-se91233.oblogation.com/35891208/5-simple-statements-about-dampers-for-industrial-sector-explained