Combine the CA804 School Slot and CA814 Bullet perforated grilles and you have the CA818 Emerald Perforated Grille. Available in a 1” wide standard pattern, the symmetrical oval openings provide 48 percent free air. This pattern is most commonly  utilized in traditional commercial, industrial, and institutional projects. Choose between aluminum, brass, bronze, stainless steel and steel materials with a variety of finishes to create the ideal perforated grille for your design. Further custom fabrications are available upon request. 

Popular options include: Our Exclusive L-Bead and L45-Bead Frame, Countersunk Mounting Holes, Welded Stiffener Bars or Support Boot, Welded Angles/Clips for Concealed Fastening, Access Door and Beveled Edges, Exact Border Specification, and Pattern Scaling.

Free Air Percentage