EFCO 403 Series Storefront - Manual (Page 48)

EFCO CORPORATION 1/2013 PART NO. Y001 Page 48 of 94
Series 401,402, & 403 Installation Instructions
Fig. #24
before anchoring unit.
between expansion mullions is never more than 25'-0".
9309
9103
9203
9204
9311
9104
Expansion space must be maintained
1/8"
WEATHERING
W104
and shear block hole locations.
Follow steps #1, #2, and #3 at Section III B for cutting
and screw spline hole locations.
Follow steps #1, #2, and #3 at Section III A for cutting
Locate expansion mullions at next mullion over so that the distance
NOTE: Do not use expansion mullions at entrance jambs.
and can be used with both screw spline and shear block systems.
Expansion mullions are required in elevations that are over 20'-25' wide
SECTION III: D. EXPANSION MULLIONS
NOTE: For screw spline application:
NOTE: For shear block application:
STEP 1)
S
S