Products 0110DOW, 0120DOW, 0110GOW and 0120GOW are "out of wall or flooring" integral sleeve static curtain kind fire dampers. Design 0110GOW and 0120GOW are particularly suitable for supply or return ducts that terminate at a grille or sign-up. Design 0110DOW and 0120DOW are created for by way of penetrations (ductwork https://heavy-duty-stainless-stee13344.is-blog.com/43706310/indicators-on-dampers-for-industrial-sector-you-should-know