EFCO 433 Series - Manual (Page 66)

June 2012 PART NO. Y017 Page 66 of 90
Series 433 Triple Set Installation Instructions
SECTION VIII: Installation
(Includes Offset and Center-Set Glazing)
Step 5) Sealing Vertical Mullions
Prior to installing an intermediate vertical mullion or perimeter jamb, apply silicone type
sealant to the vertical mullion in the location shown in Figure 47 below at the Interior
joints only. Apply sealant where indicated 6-8 inches up from the bottom of the vertical
joints. Apply enough sealant so when the filler or opposite mullion half is snapped, it
will create a good seal. Wipe off excess sealant from the exposed Interior of the frame.
This sealant practice should be followed for all variations of vertical mullions including
corners and perimeter jambs, except where a perimeter mullion uses vinyl filler. See
Figures 48 through 54.
EXCESS
SEAL
[FIG. 47]
SNAP CLEAN
8353
8352
8358
8355
SEAL
8360
8361
[FIG. 48] [FIG. 49] [FIG. 50]
SEAL SEAL