Chamberlain WHISPER DRIVE 248754 User Manual

Page 26

ONE-PIECE DOORS

Please read and comply with the warnings and
reinforcement instructions on the previous page. They
apply to one-piece doors also.

• Center the door bracket on the top of the door, in line

with the header bracket as shown. Mark either the left
and right, or the top and bottom holes.

•

Metal Doors: Drill 3/16" pilot holes and fasten the
bracket with the 1/4"-14x5/8" self-threading screws
provided.

•

Wood Doors: Drill 5/16" holes and use 5/16"x2"
carriage bolts, lock washers and nuts (not provided) or
5/16"x1-1/2" lag screws (not provided) depending on
your installation needs.

NOTE: The door bracket may be installed on the top edge
of the door if required for your installation. (Refer to the
dotted line optional placement drawing.)

HARDWARE SHOWN ACTUAL SIZE

Self-Threading Screw
1/4"-14x5/8"

Self-Threading
Screw 1/4"-14x5/8"

Door
Bracket

Top of Door
(Inside Garage)

Header Wall

Door
Bracket

2x4 Support

Optional
Placement
of Door
Bracket

Header
Bracket

Vertical
Centerline of
Garage Door

HORIZONTAL AND VERTICAL
REINFORCEMENT IS NEEDED
FOR LIGHTWEIGHT GARAGE
DOORS (FIBERGLASS,
ALUMINUM, STEEL, DOORS
WITH GLASS PANEL, ETC.).
(NOT PROVIDED)

For a door with no exposed framing,
or for the optional installation, use
lag screws 5/16"x1-1/2" (Not Provided)
to fasten door bracket.

Top of Door
(Inside Garage)

Top Edge
of Door

Optional
Placement

Nut
5/16"-18

Carriage Bolt
5/16"x2"
(Not Provided)

Lock
Washer
5/16"

METAL DOOR

WOOD DOOR

Finished Ceiling