Nailor 1280 Series Aluminum Airfoil Blade Smoke Dampers are the premium choice for applications where building codes require a leakage rated smoke damper as part of a static smoke control or dynamic smoke management system. The 1280 Series features a smoothly contoured extruded aluminum airfoil blade and compression type seals that have been especially designed to offer the lowest leakage class available. Together with out of airstream linkage, the design provides an ultralow pressure drop and minimizes unwanted turbulence and noise generation.