Chamberlain 248730 User Manual download pdf (Page 3)

Additional Items You May Need:

Survey your garage area to see if you will need any of the following items:

(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.

SUPPORT BRACKET AND FASTENING HARDWARE

Must be used if you have a finished ceiling in your garage.

EXTENSION BRACKETS (MODEL 41A5281) OR WOOD BLOCKS

Depending upon garage construction, extension bracketsor wood blocks may be needed to

install the safety reversing sensor.

FASTENING HARDWARE

Alternate floor mounting of the safety reversing sensor will require hardware not provided.

OUTSIDEQUICKRELEASE (MODEL 7702CB)

Required for a garage with NO access door.

DOOR REINFORCEMENT

Required if you have a lightweight steel, aluminum,fiberglassor glasspanel door.

RAIL EXTENSION KIT

Required if your garage door is more than 7 feet(2.13 m) high.

Tools Needed

3/16

7/16

1/2

5/32

5/16

5/8

9/16

1/4

7/16

Preparation

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Chamberlain 248730 User Manual Page 3