Sectional doors, Caution – Craftsman 139.53993D User Manual

Page 23

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Fasten the Door Bracket

Follow instructions which apply to your door type

as illustrated below or on the following page.

A horizontal reinforcement brace should be long
enough to be secured to two vertical supports. A
vertical reinforcement brace should cover the height
of the top panel.

The illustration shows one piece of angle iron as the
horizontal brace. For the vertical brace, two pieces of
angle iron are used to create a U-shaped support
(Figure 1). The best solution is to check with your garage
door manufacturer for an opener installation door

reinforcement kit.

NOTE: Many vertical brace installations provide for direct
attachment of the clevis pin and door arm. In this case

you will not need the door bracket; proceed to Installation

Step 12.

SECTIONAL DOORS

• Center the door bracket on the previously marked

vertical centerline used for the header bracket
installation. Note correct UP placement, as stamped
inside the bracket (Figure 2).

• Position the bracket on the face of the door within the

following limits:

A) The top edge of the bracket 2"-4" (5-10 cm) below

the top edge of the door.

B) The top edge of the bracket directly below any

structural support across the top of the door.

INSTALLATION STEP 12

CAUTION

Fiberglass, aluminum or lightweight steel garage doors WILL
REQUIRE reinforcement BEFORE installation of door bracket.
Contact your door manufacturer for reinforcement kit.

• Mark and drill 5/16" left and right fastening holes.

Secure the bracket as shown in Figure 1 if there is
vertical reinforcement.

If your installation doesn't require vertical reinforcement
but does need top and bottom fastening holes for the

door bracket, fasten as shown in Figure 2.

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