Designs 1221-DOW and 1221-OW are "away from wall" significant efficiency blend hearth/smoke damper especially created for apps exactly where the damper cannot be mounted inside the airplane on the wall or ground. They features Nailor’s exclusive inter-locking double pores and skin airfoil blade layout that eliminates combustible seals and gives flame and smoke https://heavydutystainlesssteelda35567.thekatyblog.com/35529307/a-secret-weapon-for-dampers-for-industrial-sector