1. Product Overview
The ASD Trimless LED Recessed Lighting fixture is a 4-inch, 15W, 120V round commercial downlight designed for seamless integration into ceilings. This canless, dimmable fixture offers five selectable color temperatures (2700K-5000K), a high Color Rendering Index (CRI 90+), and is IC Rated for direct contact with insulation. Its twist-lock design and included mud frame allow for a flush, trimless appearance after installation.

Figure 1: ASD Trimless LED Recessed Downlight, showing the fixture, J-box, and product packaging.
2. Safety Information
- WARNING: Risk of electric shock. Disconnect power at the fuse or circuit breaker before installation or servicing.
- This product must be installed in accordance with the applicable installation code by a person familiar with the construction and operation of the product and the hazards involved.
- Ensure all electrical connections are made correctly and securely.
- Do not alter or modify the fixture. Any alterations may void the warranty and create safety hazards.
- Suitable for damp and wet locations.
- IC Rated: Suitable for direct contact with insulation.
- ETL and Energy Star certified for safety and energy efficiency.
3. Package Contents
Verify that all components are present before beginning installation:
- LED Trimless Downlight (1 unit)
- Junction Box (integrated with downlight)
- Installation Template for 3 3/4" (95 mm) hole
4. Specifications

Figure 2: Product dimensions and key specifications.
| Specification | Value |
|---|---|
| Model Number | A-CD-TR-4D15AC-WH |
| Size | 4 Inch |
| Wattage | 15 Watts |
| Voltage | 120 Volts |
| Brightness | 1055 Lumens |
| Efficiency | 70 Lumens/Watt |
| Color Temperature (CCT) | 2700K, 3000K, 3500K, 4000K, 5000K (Selectable) |
| Color Rendering Index (CRI) | 90+ |
| Dimming | TRIAC Dimmable (10%-100%) |
| Beam Angle | 38° |
| Housing Material | Aluminum, PC lens |
| Installation Type | Flush Mount, Canless |
| Certifications | ETL, Energy Star, IC Rated |
| Lifespan | 50,000 hours |
| Product Dimensions | 5.91"L x 5.91"W x 3.15"H |
| Item Weight | 13.1 ounces |
5. Installation Instructions
Follow these steps for proper installation. Ensure power is disconnected at the circuit breaker before starting.
- Prepare the Opening: Use the provided template to mark and cut a 3 3/4" (95mm) diameter hole in the ceiling. Insert the Zero Clearance frame into the cut-hole and secure it with screws.
- Wiring: Disconnect power from the junction box. Connect the fixture's wires to the building's electrical wires: Black to Black (Live), White to White (Neutral), Green to Green (Ground). Secure connections with wire nuts. Place the driver box above the ceiling through the hole in the frame.
- Fixture Installation: Connect the driver box to the fixture using the quick connector. Insert the fixture into the frame and twist it clockwise to lock it securely in place.
- Color Temperature Selection: Before or after installation, select the desired color temperature using the switch located on the fixture or on the cord.

Figure 3: Visual guide for the installation process.
For a comprehensive guide, refer to the full instruction manual available here.
Key Installation Features:
- IC Rated Canless Solution: This fixture is designed to be installed directly into the ceiling, making direct contact with insulation without requiring a separate recessed can or housing.

Figure 4: IC Rated Canless installation example.
- Twist-Lock Design: The fixture features a secure twist-lock mechanism for easy and stable attachment to the ceiling frame.

Figure 5: Detail of the twist-lock design.
6. Operating Instructions
6.1. Color Temperature Selection (5 CCT)
The fixture offers five selectable color temperatures to suit various preferences and applications. Locate the CCT selection switch on the fixture or its cord. Slide the switch to choose between:
- 2700K: Soft White
- 3000K: Warm White
- 3500K: Neutral White
- 4000K: Cool White
- 5000K: Daylight

Figure 6: Color temperature options.
6.2. Dimming Functionality
This LED downlight is compatible with TRIAC dimmers, allowing for smooth dimming from 10% to 100% brightness. Ensure you use a compatible dimmer switch for optimal performance. Refer to the dimmer manufacturer's instructions for installation and operation.

Figure 7: Dimming control and compatible dimmer list.
6.3. High Color Rendering Index (CRI 90+)
The fixture boasts a CRI of 90+, which ensures that colors appear vibrant and true to life, enhancing the visual quality of your space.

Figure 8: Visual representation of CRI 90+ lighting.
7. Maintenance
The ASD Trimless LED Recessed Lighting fixture requires minimal maintenance.
- Cleaning: Ensure the power is off before cleaning. Wipe the fixture with a soft, dry, or slightly damp cloth. Do not use harsh chemicals or abrasive cleaners, as these can damage the finish or electrical components.
- Bulb Replacement: This fixture uses integrated LED technology, meaning the LED light source is not replaceable. The fixture is designed for a long lifespan of 50,000 hours under normal operation.
8. Troubleshooting
If you encounter issues with your LED recessed light, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Light does not turn on | No power supply; Loose wiring; Faulty fixture | Check circuit breaker; Verify wiring connections; Contact support if fixture is faulty. |
| Light flickers or dims inconsistently | Incompatible dimmer switch; Loose wiring; Overloaded circuit | Ensure dimmer is LED compatible; Check wiring; Reduce load on circuit. |
| Incorrect color temperature | CCT switch set incorrectly | Adjust the CCT selection switch on the fixture or cord to the desired setting. |
9. Warranty and Support
ASD Lighting provides a 5-year limited warranty for this product, covering defects in materials and workmanship under normal use. For warranty claims or technical support, please contact ASD Lighting customer service. Keep your purchase receipt as proof of purchase.





