Chamberlain T Installation Manual page 6

WEIGHTS AND DIMENSIONS
MODELS T AND APT
Hanging Weight: 80-110 lbs.
4"
(10.16 cm)
MODEL GT
Hanging Weight: 140 lbs.
4"
(10.16 cm)
Operator Specifi cations - Trolley
*Door Height Plus 4 feet (1.2 m) (minimum)
Highest Point of Door Travel
*
- For operators manufactured before February of 2018 with a caliper brake, add 3-1/2" (8.9 cm)
(Standard on APT, T 3/4 and T 1 HP models; Optional on 1/2 HP, not available on 1/3 HP models.)
For operators manufactured after January of 2018 with a drum brake, add 5" (12.7 cm)
Door Height Plus 4 feet (1.2 m) (minimum)
6
*20.5"
(52.07 cm)
12-1/2"
(31.75 cm)
*
17.5"
(44.45 cm)
13.13"
(33.35 cm)
10.5"
(26.67 cm)
17-9/16"
(44.29 cm)