Chamberlain 248739 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 best for your particular requirements.

Do not install the header bracket over drywall. If

installing into masonry, use concrete

anchors (not provided).

WALL HEADER BRACKET INSTALLATION

• 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).

• Mark the vertical set of bracket holes. Drill 3/16" pilot

holes and fasten the bracket securely to a structural

support with the hardware provided.

HARDWARE SHOWN ACTUAL SIZE

CEILING HEADER BRACKET INSTALLATION

• Extend the vertical centerline onto the ceiling as shown.

• 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 ﬂ ush against the ceiling when clearance

is minimal.

• Mark the side holes. Drill 3/16" pilot holes and fasten

bracket securely to a structural support with the

hardware provided.

Lag Screw

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

Vertical

Centerline

of Garage

Door

Vertical

Centerline

of Garage Door

Optional

Mounting Holes

Lag Screws

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

2x4

Structural

Support

Horizontal

Line

Wall Mount

Header

Bracket

Door Spring

Highest Point of

Garage Door Travel

Garage Door

Header Wall

Vertical Centerline

of Garage Door

Vertical

Centerline

of Garage Door

Garage Door

Lag Screws

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

Ceiling Mounting Holes

Header

Bracket

Door

Spring

6" (15 cm) Maximum

Header Wall

Finished Ceiling

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Chamberlain 248739 User Manual Page 13

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