Content Container These lattice face grilles are offered as an economical return air grille for minimum security applications. They are available in heavy gauge steel or heavy gauge aluminum with a selection of hole pattern designs. Models SG-LGS - Steel SG-LGA - Aluminum Submittals Individual Submittals Model SG-LGA • Minimum Security Lattice Face Grille • Aluminum Model SG-LGS • Minimum Security Lattice Face Grille • Steel Control Sequence Finish IOM Specifications Performance Data SG-LGS and SG-LGA Catalog Literature