Styles 0110DOW, 0120DOW, 0110GOW and 0120GOW are "from wall or ground" integral sleeve static curtain form hearth dampers.  Model 0110GOW and 0120GOW are especially made for provide or return ducts that terminate at a grille or sign-up. Design 0110DOW and 0120DOW are suitable for by penetrations (ductwork linked to either https://dampers-for-industrial-se45567.develop-blog.com/44448235/everything-about-dampers-for-industrial-sector