Armstrongs Classic Extruded Aluminum Perimeter Trim delivers precise, durable edge detailing for suspended and drywall ceiling systems. Made from high-quality extruded aluminum, this perimeter trim provides clean, straight lines that enhance the visual definition of ceiling edges and transitions. Its corrosion-resistant, factory-finished surface ensures long-term performance in commercial, institutional, and retail interiors. Compatible with Armstrong ceiling and suspension systems, it offers installation flexibility for both straight and curved applications. The concealed spline-clip design eliminates visible fasteners, maintaining a crisp, architectural look while supporting sustainable construction as part of Armstrongs SUSTAIN portfolio.