Chamberlain 81600 Manual page 12

Installation
2 Install the Header Bracket
You can attach the header bracket either to the wall above the garage door, or to the ceiling. Follow
the instructions which will work best for your particular requirements. Do not install the header
bracket over drywall. If installing into masonry, use concrete anchors (not provided).
Lag Screw 5/16"-9x1-5/8"
OPTION A - WALL INSTALLATION
1. Center the bracket on the vertical centerline with the bottom edge of the bracket on the
horizontal line as shown (with the arrow pointing toward the ceiling).
2. Mark the vertical set of bracket holes (do not use the holes designated for ceiling mount).
Drill 3/16" pilot holes and fasten the bracket securely to a structural support with lag screws.
FOR T-RAIL
Wall Mount
2x4 Structural
Support
Horizontal
Line
Optional Mounting Holes
Highest Point of
Garage Door Travel
FOR SQUARE RAIL
Wall Mounting Holes
2x4 Structural
Support
Horizontal
Highest Point of
Optional
Garage Door Travel
Mounting
Holes
HARDWARE
(Header Wall)
Vertical
Centerline of
Garage Door
Header
Bracket
Lag Screw
5/16"-9 x 1-5/8"
Door Spring
(Garage Door)
Header Wall
Center
of Door
I Lag Screw
5/16"-9 x
1-5/8"
Line
Door
Spring
Garage Door
OPTION B - CEILING INSTALLATION
1. Extend the vertical centerline onto the ceiling as shown.
2. Center the bracket on the vertical mark, no more than 6" (15 cm) from the wall. Make sure
the arrow is pointing toward the wall. The bracket can be mounted flush against the ceiling
when clearance is minimal.
3. Mark the side holes. Drill 3/16" pilot holes and fasten bracket securely to a structural support
with the hardware provided.
FOR T-RAIL
Header Bracket
6" (15 cm) Maximum
Door Spring
Ceiling Mounting Holes
FOR SQUARE RAIL
Header Bracket
6" (15 cm)
Ceiling Mounting
Maximum
Holes
Door Spring
12
Finished Ceiling
Vertical
Centerline of
Garage Door
Lag Screw
5/16"-9 x 1-5/8"
(Header Wall)
(Garage Door)
Finished Ceiling
Center of Door
Lag Screws
Header Wall
Garage Door