Casement 10° Bow Window - Unit Size Table Proper support of projection units required as per installation instructions. * Projection is the measurement from the outside of the exterior sheathing, to the outer edge of the unit.  • One Anderson® cable support system is included with the unit for proper installation. Two cable support systems are included with C7 wide units.  • Angle bay and bow windows are available in custom sizes, contact your local Anderson supplier for more information.  • "Unit Dimension" always refers to outside frame to frame dimension.  • Dimensions in parentheses are in millimeters.  • When ordering, be sure to specify color desired, white, sandtone or Terratone®.  NOTE: Angle bay and bow windows include only the basic unit. Roof and other installation materials are by other manufacturers. For walkout angle bay and bow window details and installation instructions, contact your local Anderson supplier.