The LiftMaster 10-13900M1 is an electrical box replacement part used with select GH and GSD industrial-duty commercial door operators. GH and GSD operators are heavier-duty commercial/industrial operator families, and their electrical boxes should be matched carefully by operator model, voltage, phase, and parts diagram. This part is not a cosmetic cover and it is not a general-purpose enclosure; it is tied to the operator control-box layout and service configuration.
In a GH or GSD commercial operator, the e-box area can involve high-voltage supply wiring, control wiring, limit circuits, accessory inputs, radio control connections, and safety-device wiring depending on the installation. When an e-box is damaged, corroded, modified, or missing, the replacement must match more than the outer shape. Wiring provisions, mounting points, and internal component arrangement matter, especially in industrial-duty equipment.
This item is commonly cross-referenced with 10-10444M1 in parts listings. That related number is useful for search and stock-label review, but it should not be used to assume every GH or GSD configuration is the same. Some commercial parts references also treat this as a made-to-order service part, so inventory and lead time should be checked before taking the operator out of service.
Known compatibility found in this review is focused on LiftMaster GH and GSD industrial-duty commercial door operators and related commercial access solutions where the parts diagram calls for this e-box.
| Feature / Specification | Details |
|---|---|
| Manufacturer | LiftMaster |
| Product Type | Electrical box / e-box replacement part |
| Part Number | 10-13900M1 |
| Related Part Number | 10-10444M1 |
| Application | Select GH and GSD industrial-duty commercial door operators |
| Compatible Operator Type | Industrial-duty commercial door operator |
| Model Families | GH, GSD |
| Voltage / Phase | Varies by operator model; verify nameplate and wiring diagram |
| Availability Note | May be treated as a made-to-order service part by some distributors |
| Not For | MT, BMT, MJ, MH, MHS, MGJ, H, J, or HJ unless a parts diagram specifically says otherwise |
| Notes | Match e-box, voltage, phase, logic generation, and wiring layout before replacement |
Do not group all LiftMaster commercial e-boxes together. GH and GSD operators use different service parts than many medium-duty or trolley/hoist operators. The old part label, operator model, and diagram should drive the order.
Industrial-duty operator electrical repair should be performed by a qualified technician. Lock out power before opening the box, document existing wiring, reconnect safety devices correctly, and test the operator through a full safe cycle before returning it to service.
The 10-13900M1 e-box is referenced for LiftMaster GH and GSD industrial-duty commercial door operator applications.
Yes. Common parts references list 10-10444M1 as an also-known-as or related number for the 10-13900M1 GH/GSD e-box.
No. This listing is for GH and GSD operator families. MT, MGJ, MJ, MH, and other medium-duty or industrial operator families may use different electrical boxes.
Some distributor references describe the 10-13900M1 e-box as a made-to-order replacement part, so availability and lead time should be checked before relying on it for an urgent repair.
Check the operator model, voltage, phase, logic generation, wiring diagram, and existing e-box part number. Similar commercial operator e-boxes may not be wired or configured the same way.