Symmetry is key with the CA820 Straight Hole Perforated Grille pattern. Featuring straight lines of circles, both horizontal and vertical, this design allows for controlled airflow to optimize the free air in your space.  This understated pattern can enhance industrial, commercial, residential and historic renovations. Choose between a variety of materials and finishes to construct your custom perforated grille design. The CA820 Straight Hole comes in three standard sizes—1/2”, 3/8”, and 1/4”—with free air percentages ranging from 35 to 20 percent and allows for unlimited customization in regards to the pattern size and spacing. 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