EFCO WV410 - Manual (Page 14)

EFCO CORPORATION 2/2014 PART NO. Y007 Page 14 of 21
WV410 WINDOW - INSTALLATION INSTRUCTIONS
#
Section VIII – Window Installation
B. Dual Window Installation
Step 3
At the predetermined mullion locations, drill and tap the storefront horizontals for two (2) MRF7
10-24 PH-SMS fasteners. See Figure 15 below.
DETA IL G DETA IL G
7/8 in [.874]
7/32 in [.224]
15/32 in [.467]
C/L of
Mullion
Interior of
Storefront
Detail G
Interior of
Storefront
K320
#9837
#1F10
Figure #15
#SPC6
#MRF7
Step 4
First apply sealant to the attachment hole in the storefront horizontals to insure against water
penetration, then install the K320 shear blocks using (2) MRF7 screws.
Step 5
Apply sealant to both ends of the female 1F10 and the male 9837 halves of the vertical mullion.
Step 6
Attach female portion 1F10 of the mullion to the shear block with (1) SFP6 screws at each end of
the mullion half. See Figure 15 above.
Shear block and all screws are
included in the K320 package.
(2) required per mullion.
* Drawings on this page are not to scale.