LiftMaster K75-35626 E-Box Cover for J, H and HJ Operators
The LiftMaster K75-35626 is a replacement E-box cover for select LiftMaster J, H, and HJ commercial door operators. The electrical box cover protects the control and wiring area of the operator and helps keep the internal components properly enclosed. On a commercial operator, a missing or damaged cover is more than a cosmetic issue because the electrical compartment may contain high-voltage wiring, transformer connections, logic controls, and accessory wiring.
This part is commonly listed for J, H, and HJ style operators, including Logic 4 and Logic 5 service paths where the parts diagram calls for K75-35626. It should not be assumed to replace every J/H/HJ cover. Older Logic 3 units, current-sense configurations, and different electrical box assemblies may use K75-32268, K75-36913, or another cover.
Before ordering, compare the existing cover, model label, operator generation, and parts breakdown. Cover fit depends on screw locations, box depth, cutouts, and whether the operator electrical box has current-sense or other configuration-specific hardware.
What This Part Does
- Replaces the E-box cover on compatible J, H, and HJ commercial door operators.
- Protects internal electrical and control components from dust, debris, and accidental contact.
- Restores the correct enclosure coverage when the original cover is missing, dented, or damaged.
Features and Specifications
| Feature / Specification | Details |
|---|
| Manufacturer | LiftMaster / Chamberlain Group |
| Product Type | Electrical box cover / E-box cover |
| Part Number | K75-35626 |
| Application | Select commercial door operator electrical boxes |
| Compatible Operator Type | J, H and HJ commercial operators by parts diagram |
| Logic Generation | Commonly associated with Logic 4 and Logic 5 service paths |
| Notes | Cover fit depends on electrical box layout and operator generation |
Compatible With / Common Applications
- Select LiftMaster J Series industrial-duty jackshaft commercial operators where K75-35626 is listed.
- Select LiftMaster H Series industrial-duty hoist commercial operators where the electrical box cover matches.
- Select LiftMaster HJ hoisted jackshaft operators with compatible E-box layout.
- Logic 4.0 and Logic 5.0 style J, H, and HJ operator applications when confirmed by parts diagram.
- Not automatically interchangeable with K75-32268, K75-36913, or current-sense E-box covers.
Also Known As / Related Part Numbers
- K75-35626
- LIF-K75-35626
- E-box cover J H HJ
- Electrical box cover J H HJ
- K75-32268 - related older L3 cover, verify before substituting
- K75-36913 - related L5/current-sense cover, verify before substituting
Technician Note
A commercial operator should not be left in service with exposed electrical components. If the cover is missing because internal parts were modified, inspect the wiring and controls before simply replacing the cover.
Before Ordering Checklist
- Confirm the operator model is J, H, or HJ.
- Confirm the parts diagram lists K75-35626.
- Compare the old cover mounting pattern and electrical box style.
- Check whether the operator has current-sense hardware or a different logic generation.
- Do not substitute another E-box cover by appearance alone.
Professional Advisory
Commercial door and gate operator repairs can involve moving mechanical parts and high-voltage wiring. Disconnect power before service, follow the operator manual, and use a qualified technician when wiring, limit adjustment, or unsafe movement is involved.
Product Questions and Answers
What operators commonly use the K75-35626 cover?
K75-35626 is commonly used on select LiftMaster J, H, and HJ commercial operators when that cover is shown in the parts diagram.
No. K75-36913 is a related E-box cover path often associated with Logic 5 current-sense configurations. Use the cover called out by the parts diagram.
Can this cover be installed on an older Logic 3 operator?
Some older units may use a different cover such as K75-32268. Confirm the operator generation and parts breakdown before ordering.
Why replace a damaged electrical box cover?
The cover helps protect the operator controls and wiring from debris, exposure, and accidental contact during normal use or service.
Does this include electrical components?
This listing is for the E-box cover only. It does not include the logic board, transformer, wiring harnesses, or control components unless separately stated.
