EFCO S5500 Advanced - Manual (Page 34)

EFCO CORPORATION 6/2012 PART NO. Y557 34
Series 5500 Advanced & Alternate Installation Instructions
Section VI: Expansion Mullions
STEP #1 PREPARE EXPANSION MULLIONS
Expansion mullions are required for elevations wider than 20’-0”. The maximum spacing
between expansion mullions is 20’-0”. Refer to the approved shop drawings for specific
locations and more information.
A. Thread the finger gaskets into the reglets of the male half of the expansion
mullion for the full length of the mullion. Refer to the approved shop drawings for
part numbers.
B. Crimp the reglet at the finger gaskets about ½” from each end with a chisel or
similar tool to lock the gasket in place.
MALE EXPANSION
MULLION
FINGER GASKET
FINGER GASKET
GASKET REGLET