Craftsman 139.53225SRT Owner's Manual page 25

P_ease read and comply with the warnings and reinforcement instructions on page 24.
They apply to oneopieoe doors also,
* Center the bracket on the top of the doer, in fine
with the header bracket as shown. Mark hotes.
Drill 5/16 _ pilot holes and fasten _e door bracket
with hardware supplied_
_fthe door has no exposed framing, drill 3/16" pilot
holes &nd fasten the bracket with 5/16_xl _1/2" lag
screws (not supplied) to the top of the door.
The door bracket may be installed on the top
edge of the door ff required for your installation.
(Rder to the dotted line optional placement
drawing.) Drill 3/16" pilot holes and substitute
5/16"x1_1_" lag screws (not supplied) to fasten
the bracket to the door.
Hardware Shown Actual Size
25