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1. Establish center (ine of door and header (Fig. 2-9).
• Close door.
• Measure door width. Mark center.
• Use straight edge to draw vertical line "V."
- down door about 6."
- on top of door.
- up header about 20".
2. Determine door rise (Fig. 2-10).
• Open door to highest point of travel.
• Measure distance from top of door to floor.
• Subtract the actual height of door. The remainder
is the door rise in inches as shown in TABLE A.
TABLE A
Door rise
in inches
Up to 4"
4" to 8"
8"to 12"
Locate header bracket above
top edge of CLOSED door
Upto 10"
10" to 15"
15" to 20"
.
Locate header bracket (Fig. 2-9).
• Use TABLE A to determine header
bracket position.
• Draw horizontal line "H" across line "H" at
this point.
..
install header bracket (Fig. 2-11).
• Place header bracket so,
- center hole is on line "V."
- all holes are on line "H."
• Mark hole positions ("A" and "B").
• Drill 5/32" holes at marked positions.
• Fasten header bracket to header with two (2)
1/4"x 2" lag screws [79].
Line "V"
(Vertical centerline of door)
See
I
I
Inside of door
Top of door
Door rise
?
Highest point Highest point Door rise
of trave, of traveL._ _
Floor
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