Product D1201-OW and D1201-DOW are "away from wall" large efficiency dynamic fire dampers. They provide top quality overall performance along with a low tension drop well matched to nearly all of industrial purposes. Exceptional, inter-locking double skin blade design and style eliminates combustible seals and delivers flame protection underneath fire https://heavydutystainlesssteelda13456.dgbloggers.com/37431703/an-unbiased-view-of-dampers-for-industrial-sector