LiftMaster K75-36913 Logic 5 E-Box Cover for J, H and HJ Operators
The LiftMaster K75-36913 is an E-box replacement cover for select Logic 5.0 commercial door operators. It is commonly used on J, H, and HJ style commercial door operators where the control enclosure is configured for Logic 5/current-sense hardware.
This cover is a protective enclosure part, but it is also a fitment-specific item. The correct cover depends on the operator family, logic generation, enclosure style, and whether current-sense components are present.
What This Part Does
The cover closes and protects the operator electrical control box. It helps shield internal wiring and control components from dust, debris, and accidental contact while keeping the commercial operator enclosure in proper service condition.
Replacement is usually needed when the original cover is missing, damaged, bent, corroded, or does not fit after a control-enclosure update.
Compatible With
K75-36913 is commonly listed for select LiftMaster Logic 5.0 J, H, and HJ commercial door operators. Compatibility should be confirmed by the operator parts diagram and E-box configuration.
Common Compatible Products and Operator Families
- Select LiftMaster Logic 5.0 J jackshaft commercial operators
- Select LiftMaster Logic 5.0 H hoist commercial operators
- Select LiftMaster Logic 5.0 HJ hoist/jackshaft commercial operators
- Select Logic 5.0 commercial operators with current-sense E-box layout
- Commercial operator enclosures calling for K75-36913 or K75-36913-1
- J, H, and HJ Logic 5 replacement parts drawings where this E-box cover is listed
Important Compatibility Notes
- Do not assume interchange with K75-35627, K75-32269, or other E-box cover numbers.
- Confirm if the operator is Logic 5.0 and whether the enclosure includes current-sense hardware.
- Some listings describe this as J/H/HJ/L5; always match the parts diagram.
Features & Specifications
| Feature / Specification | Details |
|---|
| Manufacturer | LiftMaster |
| Product Type | E-box cover / electrical enclosure cover |
| Part Number | K75-36913 |
| Related Number | K75-36913-1 |
| Application | Replacement cover for select Logic 5 commercial operator E-boxes |
| Compatible Operator Type | Select J, H, and HJ commercial door operators |
| Logic Generation | Commonly associated with Logic 5.0 / current-sense layouts |
| Notes | Verify operator model, enclosure layout, and parts diagram. |
Also Known As / Related Part Numbers
This part may be listed under the main part number or related service cover descriptions. Treat related numbers as aliases unless confirmed by the operator diagram.
- K75-36913
- K75-36913-1
- 75-36913
- LiftMaster K75-36913 cover
- E-box cover J H HJ L5
- Logic 5 E-box cover
- Current sense E-box cover
Technician Note
Check the operator generation and cover mounting pattern before ordering. A cover for an earlier Logic generation may not align correctly with a Logic 5/current-sense enclosure.
If replacing a cover after electrical service, make sure harnesses, antenna wiring, and control wires are routed so the cover does not pinch them.
Before Ordering, Confirm
- Confirm K75-36913 or K75-36913-1 appears on the parts diagram.
- Confirm the operator is a compatible Logic 5 J, H, or HJ model.
- Check the current-sense enclosure layout.
- Compare mounting hole locations and cover dimensions with the original part.
- Inspect the control box for wiring damage before closing it.
Professional Advisory
Commercial operator electrical boxes can contain high-voltage wiring. Disconnect power before removing or installing the cover. Do not operate a commercial door operator with exposed wiring or a missing electrical enclosure cover.
Questions & Answers
What does the K75-36913 cover fit?
It commonly fits select LiftMaster Logic 5.0 J, H, and HJ commercial door operators with the matching E-box layout.
Is K75-36913 a current-sense cover?
It is commonly associated with Logic 5.0 and current-sense E-box configurations, but the operator parts diagram should confirm the exact cover number.
Can I use K75-36913 instead of K75-35627?
Not unless the parts diagram confirms it. K75-35627 and K75-36913 are different cover families and may not interchange.
Why is the E-box cover important?
It protects the operator control enclosure from debris, impact, and accidental contact with internal components.
What should be checked before installing this cover?
Check the operator model, logic generation, enclosure style, mounting holes, and wire routing before installation.
