An aluminum back pan with a finish to match the glazed aluminum framing system sits above the vertical mullion, set over a full bed of sealant. Semi-rigid mineral wool insulation fills the spandrel cavity behind the aluminum back pan. The vision glazing is installed within the curtain wall framing below the mullion.
SEMI-RIGID MINERAL WOOL INSULATION VERTICAL MULLION FULL BED OF SEALANT ALUMINUM BACK PAN - FINISH TO MATCH GLAZED ALUMINUM FRAMING SYSTEM VISION GLAZING BACK PAN DETAIL AT SPANDREL
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