Models 1221-DOW and 1221-OW are "away from wall" substantial efficiency combination fireplace/smoke damper specifically designed for applications where the damper can not be set up within the airplane of your wall or flooring. They attributes Nailor’s exceptional inter-locking double pores and skin airfoil blade layout that eradicates combustible seals and offers flame and https://dampers-for-industrial-se45890.tkzblog.com/36752697/the-heavy-duty-stainless-steel-damper-manufacturers-diaries