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Chamberlain HD920EV - Page 3

Chamberlain HD920EV
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2
Additional Items You May Need:
Survey your garage area to see if you will need anyof the following items:
n
(2) 2X4 PIECES OF WOOD
Maybe used to fasten the header bracket to the structural supports.Also used to position the
garage door opener during installation and for testing the safetyreversing sensors.
n
SUPPORT BRACKET AND FASTENING HARDWARE
Must be used if you have a finished ceiling in your garage.
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EXTENSION BRACKETS (MODEL 41A5281) OR WOOD BLOCKS
Depending upon garage construction, extension brackets or wood blocksmaybe needed to
install the safetyreversing sensor.
n
FASTENING HARDWARE
Alternate floor mounting ofthe safety reversing sensor will require hardware not provided.
n
OUTSIDEQUICKRELEASE (MODEL 7702CB)
Required for a garage with NO access door.
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DOOR REINFORCEMENT
Required if you have a lightweightsteel,aluminum,fiberglassor glass panel door.
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RAIL EXTENSION KIT
Required if your garage door is more than 7 feet (2.13 m) high.
Tools Needed
2
1
3/16
7/16
1/2
5/32
5/16
5/8
9/16
1/4
7/16
Preparation

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