Chamberlain GS400D Owner's Manual page 15

POSITION THE EXTENSION BRACKET TO POST BRACKET
3
Assemble post bracket by placing the extension bracket on top of post bracket. Insert bolt
through brackets. Insert lock washer and nut. DO NOT TIGHTEN AT THIS TIME.
Left-Hand Gate
Lock Washer
Nut
Hold post bracket in desired position. Align extension bracket to a position as CLOSE AS POSSIBLE
above the marker.
3/8" Ribbed Neck Bolt
Extension
Bracket
Post Bracket
Right-Hand Gate
3/8" Ribbed Neck Bolt
Extension
Bracket
Post Bracket
15
Lock Washer
Nut
Installation