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Top Plate Extension Installation
Locate the top plate extension and top strap bracket. Place the top strap bracket onto the top plate extension and
adjust so that the holes in the top strap bracket align with the corresponding door model holes in the top plate
extension. Hold in position and secure using (4) 1/4-20 x 7/8” self-drilling screws. (see Fig. 6)
Slide the top plate extension assembly into the header bracket. Now, install the windload post into the post hole
in the fl oor and align the top of the windload post with the top plate extension assembly. Ensure that the post is
level and plumb. Using (2) 1/4-20 x 7/8” self-drilling screws, secure the windload post to the top plate extension
assembly. (see Fig. 7)
NOTE: Doors without a 2” U-bar on the top section will require an extra Jr. “A” frame bracket, at the top
of the section. (see Fig. 7).
5
(4) 1/4-20 X 7/8”
SELF-DRILLING
SCREWS
TOP PLATE
EXTENSION
TOP STRAP
BRACKET
FIG. 6
(2) 1/4-20 X 7/8”
SELF-DRILLING
SCREWS
TOP PLATE
EXTENSION
ASSEMBLY
FIG. 7
JR. “A”
FRAME