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Medium-duty gear-reduced jackshaft — typically used on rolling grilles and shutters with mid-range duty requirements.
LiftMaster commercial · Installed by Advanced Garage Door
All commercial openers
·
Commercial doors
LiftMaster Model MGJ — tap to enlarge.
About the LiftMaster Model MGJ
The LiftMaster Model MGJ is a medium-duty gear-reduced jackshaft operator commonly applied to rolling grilles and shutters and similar lighter commercial openings. It is not the same industrial Logic 5.0 J package — duty and options follow the medium-duty commercial line. We confirm HP, voltage, and cycle rating against current LiftMaster data on your quote.
Specifications (LiftMaster)
| LiftMaster Model MGJ | |
|---|---|
| Style | Medium-duty gear-reduced jackshaft |
| Logic / series | Medium-duty commercial |
| Primary use | Rolling grilles, shutters, and similar medium-duty jackshaft applications |
| Mounting | Wall / jackshaft mount as specified |
| Note | Final HP, voltage, and duty cycle confirmed from current LiftMaster data on quote |
Source: LiftMaster commercial product data. HP, voltage, and options are confirmed on your written quote.
Use MGJ for grille/shutter-style medium-duty jobs. Industrial jackshaft work uses J/H or GH.
Where available, PDFs are hosted on advancedgaragedoor.biz so downloads keep working if a factory link moves.
At a glance
Catalog only — no online checkout. Operator must be sized to the door.
Manufacturer reference
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