4½” Frame AccessoriesClick here for all 4.5″ Frame Depth Accessory Details (PDF) Click here to learn about Graham’s Unitized Receptor CAD FilesDescriptionAutoCADPDFZero Mullion; Stack Mullion; 3-Piece MullionAC_06E_0124.dwgAC_06E_0124.pdfDrawing PreviewHead/Jamb Receptor: 1/2" & 2/14"AC_06F_1023.dwgAC_06F_1023.pdfDrawing PreviewSill Starter: Equal Leg; 1-1/2" FlangeAC_06G_1023.dwgAC_06G_1023.pdfDrawing Preview