Styles 1221-DOW and 1221-OW are "away from wall" high overall performance combination fireplace/smoke damper especially designed for purposes wherever the damper can't be put in in the aircraft of the wall or floor. They functions Nailor’s one of a kind inter-locking double pores and skin airfoil blade design and style that eliminates combustible https://heavy-duty-stainless-stee23455.blog-mall.com/37763937/a-secret-weapon-for-dampers-for-industrial-sector