LiftMaster J door operator - Manual (Page 6)

TROLLEY
6 Weights and dimensions - Trolley
11.63"
(29.54 cm)
*Door Height Plus 4 feet (minimum)
*23.43"
(59.51 cm)
14"
(35.56 cm)
Highest Point of Door Travel
4"
(10.16 cm)
* - For Units with Brake add 3-1/2"
(Standard on APT, T 3/4 and T 1 HP models; Optional on T 1/3 and 1/2 HP models)
WEIGHTS AND DIMENSIONS
MODELS T AND APT
Hanging Weight: 80-110 lbs.
*
MODEL GT
Hanging Weight: 140 lbs.
Door Height Plus 4 feet (minimum)
13.05"
(33.15 cm)
18.5"
(46.99 cm)
17.5"
(44.45 cm)
4"
(10.16 cm)