Wayne Dalton Trolley Arm Attachment Operator Bracket 322984/320787. Wayne Dalton garage door opener bracket for connecting your chain, screw or belt drive garage door opener to your door. Fits directly over top section of garage door and attaches to built in strut. For models 9100, 9600, 5120, 5140.
Please note. this operator bracket works well for single car garage doors, 10' wide or less, for the 11' & wider double garage car doors, we do not recommend its use, due to potential garage door top section damage.
We STRONGLY recommend the Wayne Dalton Adjustable Operator Bracket, part number 339621 kit, that was specifically engineered for this application.
Dimensions are approximate;
4-1/2" Wide x 2-3/4" Tall, with 15/16" flange at bottom.
6 - 13/64" pre drilled bolt holes on back of bracket & 2 - 11/64" screw holes on front top lip of bracket.
Riveted clevis with 13/32" diameter clevis pin hole.
Constructed of 16 gauge galvanized steel.
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Garage Door Parts 
door trolley arm 