EFCO 8800 Series Assembly Instructions Vol.6 - Manual (Page 8)

EFCO 2009 Page 8
Series 8700 / 8800 Unitized Curtain Wall Assembly Instructions - Volume 6
Section 34 - Shadow Box Installation
1. For reduced handling, assemble the unit frame with the interior side facing upward. Use wood blocking set below the panel, clamped to the mullions on four
sides of the opening to provide the proper spacing for the shadow box. The number of wood blocks will very with the size of the panel to be applied.
2. Frames must be true and square. Prior to installing the shadow box panel, ensure the unit frame is square. Improperly squared units will cause significant
problems during the erection process. Check the frame for squareness by comparing the difference between the two diagonal measurements of the frame
by measuring from corner to opposing corner for the two diagonal dimensions. The maximum out of square tolerance for a 10’-0” unit frame dimension is a
diagonal dimension difference of 1/16”.
3. Set the shadow box panel into the opening onto the wood blocking and apply 1/8” thick shims between the shadow box frame and the mullions at each
fastener location all around the shadow box panel. Place the shims at the horizontals where they won’t interfere with the sealant in step 4.
4. Apply sealant into the attachment holes in the shadow box frame adjacent to the horizontals filling the space around where the fastener will pass. See Figure
16 on page 9.
5. Attach the shadow box panel to the unit frame with STK3.
Figure 11
Figure 12 Figure 13
Apply 1/8” shims and
attach with STK3
Set the shadow box panel
assembly into the opening on
wood blocking supports.
The unit frame must be placed
with the interior side of the
framing facing upward for
shadow box installation.
Apply 1/8” shims and
attach with STK3
Use wood blocking
clamped to the mullions to
support the shadow box