Anodized black aluminum mullion sections in 4-inch by 2-inch or 2-inch by 2-inch profiles tie into a concrete panel leg sized per structural drawings. Glazing is installed per exterior elevations and typical specifications. A 3 1/2-inch dimension locates the framing relative to the concrete panel edge. General notes reference the 2022 California Building Code Section 2406 for minimum frame lap over glass edge, minimum glass clearance, and required glass supports.
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