EFCO 904 Series - Manual (Page 20)

TOP OF MULLION FACE
1/8"
1/4"
[FIG. 9]
DPS 7/2001
STEP 2)
Fig. 9 below. This prep is for ease of installation of the jamb and
vertical mullion.
9579 or 9576
8593
8594
Notch the top of the mullion and jamb face 1/8" x 1/4" as shown in
PAGE 18
(CONT.)
SECTION III E - FABRICATION
VERTICAL INTERMEDIATE AND 2 PIECE JAMB
(BUTT GLAZED and CAPTURED MULLION SYSTEMS)