Designs 0110DOW, 0120DOW, 0110GOW and 0120GOW are "away from wall or floor" integral sleeve static curtain style fireplace dampers.  Design 0110GOW and 0120GOW are particularly made for supply or return ducts that terminate at a grille or sign up. Model 0110DOW and 0120DOW are created for as a result of https://dampers-for-industrial-se79122.thezenweb.com/details-fiction-and-dampers-for-industrial-sector-75239658