EFCO 433 Series - Manual (Page 38)

June 2012 PART NO. Y017 Page 38 of 90
Series 433 Triple Set Installation Instructions
SECTION IV: Unit Assembly
Expansion mullions are required in elevations that are over 20’-25’ wide
and can be used with both screw spline and shear block systems.
Note: Clean off all
excess sealant after
assembly.
A. Screw Spline (Offset and Center-Set)
Center Glazed Assembly With Expansion Mullion
Inside Glazed
BUTTER THE ENDS OF ALL
HORIZONTALS WITH BUTYL TYPE
SEALANT AS SHOWN BY THE
SHADED AREAS PRIOR TO
ASSEMBLY OF THE UNITS.
EXTERIOR FACE
4 ½” Head,
Horizontal, &
Sill Similar
Note: Wax Type Lubricant may be
required @ Assembly Fasteners.