EFCO WV410 - Manual (Page 10)

EFCO CORPORATION 2/2014 PART NO. Y007 Page 10 of 21
WV410 WINDOW - INSTALLATION INSTRUCTIONS
Section VI – SSG WV410 Vent Glazing
Step 7
Insert two (2) HN91 - 3/16” x 1” x 4” setting blocks on each side of the glass 6” from the corners,
as required, based on the configurations shown in Figure 7. Adjust the blocks as required to keep
the vent square.
Step 8
Insert backer rod material between the glass and the vent material around the entire perimeter
except at setting block locations. The backer rod needs to be recessed far enough to leave the
end of the outer glass lite exposed. See figure 8.
Step 9
Mask off the outside edges of the glass and vent to minimize cleanup and provide a professional
appearance. Fill the void between the glass and the vent with structural sealant. Tool in sealant
and remove the masking tape before a skin begins to form. See Figure 8.
An overnight setup is required to allow the silicone to partially cure before movement of the unit.
Figure 8
* Drawings on this page are not to scale.