Chamberlain 248730 User Manual download pdf (Page 13)

Installation

STEP 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 bestfor 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.

2. Mark the vertical set of bracket holes.Drill 3/16" pilotholes and fasten the bracket securely to a

structural support with the hardware provided.

Wall Mount

Optional Mounting

Holes

Vertical

Centerline of

Garage Door

(Header Wall)

Header

Bracket

2x4 Structural

Support

Door Spring

(Garage Door)

Highest Point

of Garage

Door Travel

Horizontal

Line

Lag Screw

5/16"-9x1-5/8"

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 away from the wall.The bracket can be mounted flush againstthe 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.

(Header Wall)

Ceiling Mounting

Holes

(Finished

Ceiling)

Vertical

Centerline of

Garage Door

Header

Bracket

6" (15 cm)

Maximum

Door Spring

(Garage Door)

Lag Screw

5/16"-9x1-5/8"

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Chamberlain 248730 User Manual Page 13

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