The LiftMaster K77-37708 is a replacement cover for SL3000 Series AC commercial slide gate operators. The cover protects the operator chassis, motor area, control components, and drive hardware from rain, sun, dust, insects, and physical contact. It is commonly replaced when the original cover is cracked, missing, heavily weathered, or no longer sitting securely on the operator.
This is a model-specific cover, not a universal slide gate housing. SL3000AC, SL3000U, and related SL3000 configurations can share similar service references, but the parts diagram should confirm the cover before ordering. A wrong cover can interfere with access, clearance, ventilation, locking, or weather protection.
| Feature / Specification | Details |
|---|---|
| Manufacturer | LiftMaster |
| Product Type | Replacement operator cover |
| Part Number | K77-37708 |
| Application | SL3000 Series cover replacement |
| Compatible Operator Type | AC commercial slide gate operator |
| Common Models | SL3000AC, SL3000U, SL3000UL, SL3000501U where specified |
| Material | Polyethylene cover in some listings |
| Notes | Verify SL3000 parts diagram and generation |
Use this part when the original component is damaged, missing, cracked, corroded, worn, or no longer holding the related operator assembly correctly. Because many LiftMaster and Elite parts look similar across generations, final fitment should be based on the model number and replacement parts diagram, not appearance alone.
Installation should be performed with power disconnected and the gate secured. For high-voltage wiring, damaged enclosures, missing safety devices, or uncertain fitment, use a qualified gate technician.
It replaces the protective outer cover on select LiftMaster SL3000 Series AC slide gate operators.
Common references include SL3000AC, SL3000U, SL3000UL, and SL3000501U configurations where listed in the parts diagram.
No. SL3000 and CSL24V covers are different service parts and should not be interchanged.
A damaged cover can expose the motor, drive parts, and electronics to weather, dirt, insects, and physical damage.
Kit contents can vary by supplier listing. Confirm whether hardware, labels, lock, or keys are included if needed.