EFCO 403X Series - Manual (Page 16)

Series 403X Storefront Installation Instructions
EFCO 2013 Page 16
Section 3E. Steel Reinforcing
Fabrication Steps:
 Cut the steel reinforcing to mullion length minus 3” and set flush with the bottom of the vertical.
 Paint the cut ends to prevent rust.
 Insert the steel into the mullion, then drill through the deep pocket of the mullion and the steel reinforcing at 16” on-
center - maximum spacing.
 Tap the hole in the steel to accept proper machine screw for that mullion and steel reinforcing combination.
 Drill a clear hole in the mullion with a .221” (#2) drill bit.
 Install the steel with the appropriate screw. If it is a flat head screw it does not countersink into the mullion.
Fig. #14
Standard Steel reinforcing Combinations
21S7 / 21S8
Expansion Mullion
 21S7 Male
Expansion Mullion
 21S8 Female
Expansion Mullion
 M100 #12-24 x 3/4”
PL FH MS 18-8 UC
 L101 Steel
Reinforcing
21T3 / 5G44 Vertical
Mullion
 21T3 Open Back
Jamb
 5G44 Open Back
Adaptor
 MS01 #12-24 x 1/2”
PL PH MS 18-8
 L100 Steel
Reinforcing