LiftMaster MAXUM JDC Manuel D'installation page 8

Operator Dimensions (continued)
TDC Trolley
4"
(10.16 cm)
*Door Height Plus C (minimum)
Highest Point of Door Travel
OPERATOR DIMENSIONS TABLE
DIMENSIONS
A B
700LB STD 18.552" 21.065"
1200LB STD 18.867" 21.380"
1200LB EXT 18.867" 21.380"
8
A
C
4 ft (1.2 m)
4.3 ft (1.3 m)
4.3 ft (1.3 m)
11.73"
(29.8 cm)
10.5"
(26.67 cm)
B