SGAL-1, SGAL-15, SGAL-45 - Minimum Security Aluminum louver grille

Contractor shall furnish and install the minimum security grilles, type SGAL-1, SGAL-15, and SGAL-45, as herein 
specified, or where shown on plans. The units shall be as manufactured by Anemostat Products. The frame shall be of heavy gauge extruded aluminum, with a 1" border and welded corners. An extruded aluminum grille core will consist of bars 1/4" x 3/4" x 1/2" on centers. The grille support bar will be extruded aluminum. The interior perforated screen shall be 14 GA aluminum. The unit shall be installed with tamperproof screws. The SGAL-1, SGAL-15, and SGAL-45 units shall be finished in natural anodize.