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