Planning - Chamberlain JDC Manual

Planning

NOTE: Please obtain the latest Installation Manual by search the model number at liftmaster.com.
SECTIONAL DOORS
Recommended Drum/Sprocket Configuration for 12"/second Door Speed
Operator Door Type
Standard
700 Hi-lift
Standard
Vertical
Standard
1200 Hi-lift
Hi-lift
Standard
Vertical
Hi-lift
2200 Standard
Hi-lift
Vertical
UNINSULATED ROLLING DOORS 20'
Operator Sprocket
700
1200
2200
INSULATED ROLLING DOORS 20'
Operator Sprocket
700
1200
2200
* Sprockets will no longer be included in the box.
Drum*
D400-96
D400-54
D400-144
D850-132
D5250-18
D525-54
D575-120
D525-216
D1100-216
D6375-164
D800-384**
D800-120
D1350-336
Door Weight
50 Up to 450 lbs
450 up to 700 lbs
72 700 up to 1200 lbs
1200 up to 1800 lbs
82 1800 up to 2200 lbs
Door Weight
60 Up to 450 lbs
72 450 up to 900 lbs
82 900 to 1500 lbs
90 1500 up to 2000 lbs
Sprockets**
16
22
32
42
4