section of the door with the lower sections. Once aligned, position the top fixture slide, out
against the horizontal track. Maintaining the slide’s position, tighten the 1/4” - 20 flange hex
nuts or the 5/16” - 18 nut to secure the top fixture slide to the top fixture base. Repeat for
other side.
COUNTERBALANCE
INSTALLATION INSTRUCTIONS
Attaching End Bearing Brackets
15
NOTE: Refer to illustrations shown below, Package Contents or Breakdown of Parts, to deter-
mine which End Bearing Brackets you have.
NOTE:
Prior to fastening end bearing brackets into the door jamb, pilot drill using a 3/16”
drill bit.
IMPORTANT:
RIGHT AND LEFT HAND IS ALWAYS DETERMINED FROM INSIDE THE BUILDING
LOOKING OUT.
NOTE:
End bearing brackets are right and left hand.
FOR STANDARD LIFT APPLICATIONS:
Depending on which end bearing bracket you have:
Either attach the left hand end bearing bracket to the left hand flag angle or through either
the end bearing bracket’s upper / lower slots to the left hand horizontal track angle using (2)
3/8” - 16 x 3/4” truss head bolts and (2) 3/8” - 16 nuts, as shown.
Horizontal track angle
Horizontal track radius
Upper
slots
Lower
slots
Or
IMPORTANT:
THE END BEARING BRACKET’S LOWER SLOTS ARE USED ON DOORS WITH 12”
RADIUS TRACK; THE UPPER SLOTS ARE USED ON DOORS WITH 15” RADIUS TRACK.
(2) 3/8”-16
Hex nuts
(2) 3/8”-16 x 3/4”
Truss head bolts
Left hand
end bracket
(2) 3/8”-16
Hex nuts
(2) 3/8”-16 x 3/4”
Truss head bolts
Horizontal
track angle
Left hand
end bracket
Jamb
Flag
angle
Secure the top of the end bearing bracket to the jamb using 5/16” x 1-5/8” lag screw(s).
Repeat the same process for right hand side.
Jamb
5/16” x 1-5/8”
Lag screws
Or
Left hand
end bracket
Left
hand
end
bracket
FOR LOW HEADROOM APPLICATIONS:
Using a tape measure, determine if the bottom
curve of the horizontal track is either 12” or 15” radius. End bearing brackets are right hand
and left hand. Starting with the left hand side, position the left hand end bearing bracket
above the left hand flag angle, as shown. Loosely attach the end bearing bracket to the flag
angle using (1) 3/8” - 16 x 3/4” truss head bolt and (1) 3/8” - 16 nut.
NOTE:
Ensure the 3/8” - 16 x 3/4” truss head bolt is going through the inside portion of flag
angle first and the 3/8” - 16 hex nut is on the outside of the flag angle, as shown.
IMPORTANT:
SPACING SPECIFIED BELOW MUST BE MAINTAINED BETWEEN THE END
BEARING BRACKET AND THE FLAG ANGLE. THIS IS TO ENSURE PROPER CLEARANCE OF THE
COUNTERBALANCE LIFT CABLE.
Once the end bearing bracket is properly positioned as shown in the illustration, tighten the
3/8” - 16 nut to secure the end bearing bracket to the flag angle. Next, secure the end bear-
ing bracket to the jamb using (2) 5/16” x 1-5/8” lag screws, as shown. Repeat same process
for the other side.
Bottom curve of
horizontal track
Left hand end
bearing bracket
Flag
angle
Horizontal
track
If your bottom
curve is 12”
Radius, the
spacing will need
to be = 1”
If your bottom
curve is 15”
Radius, the
spacing will need
to be = 1/2”
(1) 3/8”-16”
Hex nut
3/8”-16 x 3/4”
Truss head bolt
Left hand end
bearing bracket
Flag
angle
Horizontal track
5/16” x 1-5/8”
Lag screws
3/8”-16 x 3/4” Truss
head bolt and
3/8”-16” hex nut
NOTE:
Repeat the same
process for the other side.
Attaching Center Bracket to Wall
16
First, locate the center of the door. Mark a vertical pencil line on the mounting surface above
the door, at the center. Measure from the center of the bearing, in one of the end bearing
brackets, downwards, to the top the door. Using that measurement, measure that distance
upwards from the top of the door to the mounting surface and mark a horizontal pencil line
which intersects the vertical pencil line.
NOTE:
On some single spring doors, the spring can be longer than half the opening width. If
your spring is longer, then the center bracket must be mounted off center for the spring to fit
properly. Measure spring length adding room for spring growth during winding, to determine
appropriate center bracket location.
Attach each of the center bracket(s) to the mounting surface, using 5/16” RED HEAD lag
screws, as shown.
IMPORTANT:
USE A 5/16” X 2-1/2” RED HEAD LAG SCREW INSTEAD OF THE 5/16” X
1-5/8” RED HEAD LAG SCREW IF MOUNTING SURFACE IS COVERED BY DRYWALL. THE LAG
SCREW MUST BE ATTACHED THROUGH THE BOTTOM HOLE OF THE CENTER BRACKET(S).
IF MOUNTING SURFACE IS A 2” X 6” BOARD INSTALLED ON TOP OF MASONRY, DRILL A
CLEARANCE HOLE IN MASONRY FOR THE 5/16” X 2-1/2” RED HEAD LAG SCREWS.
Typical
center
bracket
Vertical
line
Equal distance (top of door
section to horizontal line)
Horizontal
line
Typical center
of left hand
end bearing
bracket
Jamb
Equal distance (top of door
section to horizontal line)
Center
of door
Spring mounting
pad (2” X 6”), White
Pine or denser.
7
