Overhead Door™ side-folding full closure grilles are ideal for applications that require a secure barrier against theft and debris, such as retail applications in malls and airport concourses. The full closure side folding grille product line includes four panel materials: perforated steel, clear polycarbonate, tempered glass and aluminum.
Side Folding Full Enclosure Security Grilles Model 675 features painted perforated steel for full ventilation. Visibility: 51% of 6-1/8″ (156 mm) viewable area.