LiftMaster 87504-267 Instrucciones De Montaje página 17

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).
HARDWARE
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).
Wall Mount
2x4 Structural
Support
Horizontal
Line
Optional
Highest Point of
Mounting
Garage Door
Holes
Travel
(Header Wall)
Vertical
Centerline of
Garage Door
Header
Bracket
Lag Screw
5/16"-9 x 1-5/8"
Door Spring
(Garage Door)
OPTION B - CEILING INSTALLATION
1. Extend the vertical centerline onto the ceiling as shown.
2. Mark the side holes. Drill 3/16" pilot holes and fasten bracket securely to a structural support with the
hardware provided.
Ceiling Mounting Holes
6" (15 cm)
Maximum
Door Spring
17
Header
(Finished Ceiling)
Bracket
(Garage Door)
Vertical
Centerline of
Garage Door
Lag Screw
5/16"-9 x 1-5/8"
(Header Wall)