Installation Guide
ATTACHING REAR BACK HANGS
20
IMPORTANT: Hold the door down to prevent it from rising unexpectedly in the event the
spring(s) were over-wound and cautiously remove locking pliers from vertical tracks.
STEP 20 INSTRUCTIONS
20a. Raise the door until the top section and half of the next section are in the horizontal
track radius. Do not raise door any further since rear of horizontal tracks are not yet sup-
ported.
WARNING
RAISING DOOR INTO THE LOOSE HORIZONTAL TRACKS CAN RESULT IN
DOOR FALLING AND CAUSE SEVERE OR FATAL INJURY.
20b. Clamp a pair of locking pliers onto the vertical tracks just above the second track roller
on one side, and just below the second track roller on the other side. This will prevent the
door from raising or lowering while installing the rear back hangs.
20c. Using the chart below, select the appropriate perforated angle (may not be supplied).
Fabricate and install rear back hangs, as shown.
Perforated Angle Gauge Weight Limitations:
Perforated Angle Gauge Door Balance Weight
2” x 2” x 12 Gauge 800 lbs. to 1600 lbs.
1-1/4” x 1-1/4” x 13 Gauge 305 lbs. to 610 lbs.
1-1/4” x 1-1/4” x 15 Gauge 220 lbs. to 440 lbs.
1-1/4” x 1-1/4” x 16 Gauge 175 lbs. to 350 lbs.
NOTE: If an opener is installed, position horizontal tracks one hole above level when secur-
ing them to the rear back hangs.
WARNING
KEEP HORIZONTAL TRACKS PARALLEL AND WITHIN 3/4” TO 7/8”
MAXIMUM OF DOOR EDGE, OTHERWISE DOOR COULD FALL, RESULTING
IN SEVERE OR FATAL INJURY.
WARNING
MAKE SURE BACK HANGS ARE BRACED SUFFICIENTLY TO RESIST ANY
MOTION DURING SPRING APPLICATION AND DOOR TRAVEL. IF BACK
HANGS PIVOT OR DEFLECT, ADD REINFORCEMENT UNTIL THEY REMAIN
FIRM AND STATIONARY. ANY BACK HANG THAT HAS BENT MUST BE
REPLACED.
IMPORTANT: Do not support the weight of the door on any part of the rear back hangs that
cantilevers 4” or more beyond a sound framing member.
NOTE: If rear back hangs are to be installed over drywall, use (2) 5/16” x 2” hex head lag
screws and make sure lag screws engage into solid structural lumber.
WARNING
FAILURE TO ASSEMBLE AND ATTACH REAR BACK HANGS PROPERLY
ACCORDING TO THE ABOVE INSTRUCTIONS MAY RESULT IN DOOR
FALLING WHEN RAISED, CAUSING SEVERE OR FATAL INJURY.
NOTE: Perforated angle must be attached to sound framing members and nails should
not be used.
90°
(3) 5/16”
Bolts and nuts
(3) 5/16” Bolts and
(3) 5/16” nuts
Perforated
angle
5/16” Hex nut
5/16”-18 x 1-1/4”
Hex bolt
Perforated angle bolted
using (2) 5/16” x 1-5/8”
hex head lag screws to
ceiling member and
parallel to door
Horizontal track
NOTE: Repeat the same
process for right hand side.
Horizontal tracks
Door edges
3/4” To 7/8”
3/4” To 7/8”
ATTACHING WEATHERSTRIPS (IF INCLUDED)
21
NOTE: When permanently attaching the weatherstrips to the jambs, avoid pushing the
weatherstrips too tightly against the face of door.
STEP 21 INSTRUCTIONS
21a. Permanently attach the weatherstrips on both door jambs and header. The weather-
strips were temporarily attached in Preparing the Opening, in the pre-installation section of
this manual.
Weatherstrips
Nail
Weatherstrips
Jamb
Weatherstrips
installed
Jamb
Header
Jamb
Nail
NOTE: Door not shown for clarity.
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