SECTION 08520 – ALUMINUM WINDOWS

A. Aluminum extrusions shall comply with ASTM B 221 and tolerances shall be in accordance with the Aluminum Association’s “Drafting Standards for Aluminum Extruded and Tubular Products”. Extrusions shall not be less than a nominal .080 inch thick at any location for main frame and glazing stops. Sheet shall comply with ASTM B 209, alloy ... ................
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